The SUSE Linux Enterprise 15 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed :

CVE-2019-19767: Fixed ext4_expand_extra_isize mishandles, as demonstrated by use-after-free errors in __ext4_expand_extra_isize and ext4_xattr_set_entry, related to fs/ext4/inode.c and fs/ext4/super.c (bnc#1159297).

CVE-2019-18808: Fixed a memory leak in the ccp_run_sha_cmd() function in drivers/crypto/ccp/ccp-ops.c allowed attackers to cause a denial of service (memory consumption) (bnc#1156259).

CVE-2019-19066: Fixed memory leak in the bfad_im_get_stats() function in drivers/scsi/bfa/bfad_attr.c that allowed attackers to cause a denial of service (memory consumption) by triggering bfa_port_get_stats() failures (bnc#1157303).

CVE-2019-19051: Fixed memory leak in the i2400m_op_rfkill_sw_toggle() function in drivers/net/wimax/i2400m/op-rfkill.c that allowed attackers to cause a denial of service (memory consumption) (bnc#1159024).

CVE-2019-19338: There was an incomplete fix for Transaction Asynchronous Abort (TAA) (bsc#1158954).

CVE-2019-19332: There was an OOB memory write via kvm_dev_ioctl_get_cpuid (bsc#1158827).

CVE-2019-19537: There was a race condition bug that could have been caused by a malicious USB device in the USB character device driver layer (bnc#1158904).

CVE-2019-19535: There was an info-leak bug that could have been caused by a malicious USB device in the drivers/net/can/usb/peak_usb/pcan_usb_fd.c driver (bnc#1158903).

CVE-2019-19527: There was a use-after-free bug that could have been caused by a malicious USB device in the drivers/hid/usbhid/hiddev.c driver (bnc#1158900).

CVE-2019-19526: There was a use-after-free bug that could have been caused by a malicious USB device in the drivers/nfc/pn533/usb.c driver (bnc#1158893).

CVE-2019-19533: There was an info-leak bug that could have been caused by a malicious USB device in the drivers/media/usb/ttusb-dec/ttusb_dec.c driver (bnc#1158834).

CVE-2019-19532: There were multiple out-of-bounds write bugs that could have been caused by a malicious USB device in the Linux kernel HID drivers (bnc#1158824).

CVE-2019-19523: There was a use-after-free bug that could have been caused by a malicious USB device in the drivers/usb/misc/adutux.c driver (bnc#1158823).

CVE-2019-15213: An issue was discovered in the Linux kernel, there was a use-after-free caused by a malicious USB device in the drivers/media/usb/dvb-usb/dvb-usb-init.c driver (bnc#1146544).

CVE-2019-19531: There was a use-after-free bug that can be caused by a malicious USB device in the drivers/usb/misc/yurex.c driver (bnc#1158445).

CVE-2019-19543: There was a use-after-free in serial_ir_init_module() in drivers/media/rc/serial_ir.c (bnc#1158427).

CVE-2019-19525: There was a use-after-free bug that can be caused by a malicious USB device in the drivers/net/ieee802154/atusb.c driver (bnc#1158417).

CVE-2019-19530: There was a use-after-free bug that can be caused by a malicious USB device in the drivers/usb/class/cdc-acm.c driver (bnc#1158410).

CVE-2019-19536: There was an info-leak bug that can be caused by a malicious USB device in the drivers/net/can/usb/peak_usb/pcan_usb_pro.c driver (bnc#1158394).

CVE-2019-19524: There was a use-after-free bug that can be caused by a malicious USB device in the drivers/input/ff-memless.c driver (bnc#1158413).

CVE-2019-19528: There was a use-after-free bug that can be caused by a malicious USB device in the drivers/usb/misc/iowarrior.c driver (bnc#1158407).

CVE-2019-19534: There was an info-leak bug that can be caused by a malicious USB device in the drivers/net/can/usb/peak_usb/pcan_usb_core.c driver (bnc#1158398).

CVE-2019-19529: There was a use-after-free bug that can be caused by a malicious USB device in the drivers/net/can/usb/mcba_usb.c driver (bnc#1158381).

CVE-2019-14901: A heap overflow flaw was found in the Linux kernel in Marvell WiFi chip driver. The vulnerability allowed a remote attacker to cause a system crash, resulting in a denial of service, or execute arbitrary code. The highest threat with this vulnerability is with the availability of the system. If code execution occurs, the code will run with the permissions of root. This will affect both confidentiality and integrity of files on the system (bnc#1157042).

CVE-2019-14895: A heap-based buffer overflow was discovered in the Linux kernel in Marvell WiFi chip driver. The flaw could occur when the station attempts a connection negotiation during the handling of the remote devices country settings. This could have allowed the remote device to cause a denial of service (system crash) or possibly execute arbitrary code (bnc#1157158).

CVE-2019-18660: The Linux kernel on powerpc allowed Information Exposure because the Spectre-RSB mitigation is not in place for all applicable CPUs. This is related to arch/powerpc/kernel/entry_64.S and arch/powerpc/kernel/security.c (bnc#1157038).

CVE-2019-18683: An issue was discovered in drivers/media/platform/vivid in the Linux kernel. It is exploitable for privilege escalation on some Linux distributions where local users have /dev/video0 access, but only if the driver happens to be loaded.
There are multiple race conditions during streaming stopping in this driver (part of the V4L2 subsystem). These issues are caused by wrong mutex locking in vivid_stop_generating_vid_cap(), vivid_stop_generating_vid_out(), sdr_cap_stop_streaming(), and the corresponding kthreads. At least one of these race conditions leads to a use-after-free (bnc#1155897).

CVE-2019-18809: A memory leak in the af9005_identify_state() function in drivers/media/usb/dvb-usb/af9005.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) (bnc#1156258).

CVE-2019-19062: A memory leak in the crypto_report() function in crypto/crypto_user_base.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering crypto_report_alg() failures (bnc#1157333).

CVE-2019-19057: Two memory leaks in the mwifiex_pcie_init_evt_ring() function in drivers/net/wireless/marvell/mwifiex/pcie.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering mwifiex_map_pci_memory() failures (bnc#1157197).

CVE-2019-19056: A memory leak in the mwifiex_pcie_alloc_cmdrsp_buf() function in drivers/net/wireless/marvell/mwifiex/pcie.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering mwifiex_map_pci_memory() failures (bnc#1157197).

CVE-2019-19068: A memory leak in the rtl8xxxu_submit_int_urb() function in drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering usb_submit_urb() failures (bnc#1157307).

CVE-2019-19063: Two memory leaks in the rtl_usb_probe() function in drivers/net/wireless/realtek/rtlwifi/usb.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) (bnc#1157298).

CVE-2019-19227: In the AppleTalk subsystem in the Linux kernel there was a potential NULL pointer dereference because register_snap_client may return NULL. This will lead to denial of service in net/appletalk/aarp.c and net/appletalk/ddp.c, as demonstrated by unregister_snap_client (bnc#1157678).

CVE-2019-19065: A memory leak in the sdma_init() function in drivers/infiniband/hw/hfi1/sdma.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering rhashtable_init() failures (bnc#1157191).

CVE-2019-19077: A memory leak in the bnxt_re_create_srq() function in drivers/infiniband/hw/bnxt_re/ib_verbs.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering copy to udata failures (bnc#1157171).

CVE-2019-19052: A memory leak in the gs_can_open() function in drivers/net/can/usb/gs_usb.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering usb_submit_urb() failures (bnc#1157324).

CVE-2019-19067: Four memory leaks in the acp_hw_init() function in drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering mfd_add_hotplug_devices() or pm_genpd_add_device() failures (bsc#1157180).

CVE-2019-19060: A memory leak in the adis_update_scan_mode() function in drivers/iio/imu/adis_buffer.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) (bnc#1157178).

CVE-2019-19049: A memory leak in the unittest_data_add() function in drivers/of/unittest.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering of_fdt_unflatten_tree() failures (bsc#1157173).

CVE-2019-19075: A memory leak in the ca8210_probe() function in drivers/net/ieee802154/ca8210.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering ca8210_get_platform_data() failures (bnc#1157162).

CVE-2019-19058: A memory leak in the alloc_sgtable() function in drivers/net/wireless/intel/iwlwifi/fw/dbg.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering alloc_page() failures (bnc#1157145).

CVE-2019-19074: A memory leak in the ath9k_wmi_cmd() function in drivers/net/wireless/ath/ath9k/wmi.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) (bnc#1157143).

CVE-2019-19073: Memory leaks in drivers/net/wireless/ath/ath9k/htc_hst.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering wait_for_completion_timeout() failures. This affects the htc_config_pipe_credits() function, the htc_setup_complete() function, and the htc_connect_service() function (bnc#1157070).

CVE-2019-15916: An issue was discovered in the Linux kernel There was a memory leak in register_queue_kobjects() in net/core/net-sysfs.c, which will cause denial of service (bnc#1149448).

CVE-2019-16231: drivers/net/fjes/fjes_main.c in the Linux kernel 5.2.14 did not check the alloc_workqueue return value, leading to a NULL pointer dereference (bnc#1150466).

CVE-2019-18805: An issue was discovered in net/ipv4/sysctl_net_ipv4.c in the Linux kernel There was a net/ipv4/tcp_input.c signed integer overflow in tcp_ack_update_rtt() when userspace writes a very large integer to /proc/sys/net/ipv4/tcp_min_rtt_wlen, leading to a denial of service or possibly unspecified other impact (bnc#1156187).

CVE-2019-17055: base_sock_create in drivers/isdn/mISDN/socket.c in the AF_ISDN network module in the Linux kernel did not enforce CAP_NET_RAW, which means that unprivileged users can create a raw socket (bnc#1152782).

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote CentOS Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the CESA-2020:4060 advisory.

  - kernel: out of bounds write in function i2c_smbus_xfer_emulated in drivers/i2c/i2c-core-smbus.c     (CVE-2017-18551)

  - kernel: race condition in smp_task_timedout() and smp_task_done() in drivers/scsi/libsas/sas_expander.c     leads to use-after-free (CVE-2018-20836)

  - kernel: null pointer dereference in dlpar_parse_cc_property in arch/powerrc/platforms/pseries/dlpar.c     causing denial of service (CVE-2019-12614)

  - kernel: null pointer dereference in drivers/media/usb/zr364xx/zr364xx.c driver (CVE-2019-15217)

  - kernel: Memory leak in drivers/scsi/libsas/sas_expander.c (CVE-2019-15807)

  - kernel: use-after-free in drivers/bluetooth/hci_ldisc.c (CVE-2019-15917)

  - kernel: null-pointer dereference in drivers/net/fjes/fjes_main.c (CVE-2019-16231)

  - kernel: null pointer dereference in drivers/scsi/qla2xxx/qla_os.c (CVE-2019-16233)

  - kernel: Memory leak in sit_init_net() in net/ipv6/sit.c (CVE-2019-16994)

  - kernel: unprivileged users able to create RAW sockets in AF_IEEE802154 network protocol (CVE-2019-17053)

  - kernel: unprivileged users able to create RAW sockets in AF_ISDN network protocol (CVE-2019-17055)

  - kernel: memory leak in ccp_run_sha_cmd() function in drivers/crypto/ccp/ccp-ops.c (CVE-2019-18808)

  - kernel: Denial Of Service in the __ipmi_bmc_register() function in drivers/char/ipmi/ipmi_msghandler.c     (CVE-2019-19046)

  - kernel: memory leak in the nl80211_get_ftm_responder_stats() function in net/wireless/nl80211.c allows DoS     (CVE-2019-19055)

  - kernel: A memory leak in the alloc_sgtable() function in drivers/net/wireless/intel/iwlwifi/fw/dbg.c     allows for a DoS (CVE-2019-19058)

  - kernel: Multiple memory leaks in the iwl_pcie_ctxt_info_gen3_init() function in     drivers/net/wireless/intel/iwlwifi/pcie/ctxt-info-gen3.c allows for a DoS (CVE-2019-19059)

  - kernel: memory leak in the crypto_report() function in crypto/crypto_user_base.c allows for DoS     (CVE-2019-19062)

  - kernel: Two memory leaks in the rtl_usb_probe() function in drivers/net/wireless/realtek/rtlwifi/usb.c     allow for a DoS (CVE-2019-19063)

  - Kernel: kvm: OOB memory write via kvm_dev_ioctl_get_cpuid (CVE-2019-19332)

  - kernel: mounting a crafted ext4 filesystem image, performing some operations, and unmounting can lead to a     use-after-free in ext4_put_super in fs/ext4/super.c (CVE-2019-19447)

  - kernel: use-after-free caused by a malicious USB device in the drivers/usb/misc/adutux.c driver     (CVE-2019-19523)

  - kernel: a malicious USB device in the drivers/input/ff-memless.c leads to use-after-free (CVE-2019-19524)

  - kernel: use-after-free caused by a malicious USB device in the drivers/usb/class/cdc-acm.c driver     (CVE-2019-19530)

  - kernel: information leak bug caused by a malicious USB device in the     drivers/net/can/usb/peak_usb/pcan_usb_core.c driver (CVE-2019-19534)

  - kernel: race condition caused by a malicious USB device in the USB character device driver layer     (CVE-2019-19537)

  - kernel: use-after-free in __ext4_expand_extra_isize and ext4_xattr_set_entry related to fs/ext4/inode.c     and fs/ext4/super.c (CVE-2019-19767)

  - kernel: use-after-free in sound/core/timer.c (CVE-2019-19807)

  - kernel: Null pointer dereference in drop_sysctl_table() in fs/proc/proc_sysctl.c (CVE-2019-20054)

  - kernel: memory leak in mwifiex_tm_cmd in drivers/net/wireless/marvell/mwifiex/cfg80211.c (CVE-2019-20095)

  - kernel: out-of-bounds write via crafted keycode table (CVE-2019-20636)

  - kernel: out of bounds write in i2c driver leads to local escalation of privilege (CVE-2019-9454)

  - kernel: use after free due to race condition in the video driver leads to local privilege escalation     (CVE-2019-9458)

  - kernel: use-after-free in cdev_put() when a PTP device is removed while it's chardev is open     (CVE-2020-10690)

  - kernel: uninitialized kernel data leak in userspace coredumps (CVE-2020-10732)

  - kernel: NFS client crash due to index buffer overflow during Direct IO write causing kernel panic     (CVE-2020-10742)

  - kernel: SELinux netlink permission check bypass (CVE-2020-10751)

  - kernel: vhost-net: stack overflow in get_raw_socket while checking sk_family field (CVE-2020-10942)

  - kernel: out-of-bounds write in mpol_parse_str function in mm/mempolicy.c (CVE-2020-11565)

  - kernel: sg_write function lacks an sg_remove_request call in a certain failure case (CVE-2020-12770)

  - kernel: possible to send arbitrary signals to a privileged (suidroot) parent process (CVE-2020-12826)

  - kernel: memory corruption in Voice over IP nf_conntrack_h323 module (CVE-2020-14305)

  - kernel: some ipv6 protocols not encrypted over ipsec tunnel (CVE-2020-1749)

  - Kernel: kvm: nVMX: L2 guest may trick the L0 hypervisor to access sensitive L1 resources (CVE-2020-2732)

  - kernel: out-of-bounds read in in vc_do_resize function in drivers/tty/vt/vt.c (CVE-2020-8647)

  - kernel: invalid read location in vgacon_invert_region function in drivers/video/console/vgacon.c     (CVE-2020-8649)

  - kernel: out-of-bounds read in set_fdc in drivers/block/floppy.c (CVE-2020-9383)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The SUSE Linux Enterprise 12 SP4 kernel-azure was updated to receive various security and bugfixes.

The following security bugs were fixed :

CVE-2019-19051: There was a memory leak in the i2400m_op_rfkill_sw_toggle() function in drivers/net/wimax/i2400m/op-rfkill.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) (bnc#1159024).

CVE-2019-19338: There was an incomplete fix for Transaction Asynchronous Abort (TAA) (bnc#1158954).

CVE-2019-19332: There was an OOB memory write via kvm_dev_ioctl_get_cpuid (bnc#1158827).

CVE-2019-19537: There was a race condition bug that can be caused by a malicious USB device in the USB character device driver layer (bnc#1158904).

CVE-2019-19535: There was an info-leak bug that can be caused by a malicious USB device in the drivers/net/can/usb/peak_usb/pcan_usb_fd.c driver (bnc#1158903).

CVE-2019-19527: There was a use-after-free bug that can be caused by a malicious USB device in the drivers/hid/usbhid/hiddev.c driver (bnc#1158900).

CVE-2019-19526: There was a use-after-free bug that can be caused by a malicious USB device in the drivers/nfc/pn533/usb.c driver (bnc#1158893).

CVE-2019-19533: There was an info-leak bug that can be caused by a malicious USB device in the drivers/media/usb/ttusb-dec/ttusb_dec.c driver (bnc#1158834).

CVE-2019-19532: There were multiple out-of-bounds write bugs that can be caused by a malicious USB device in the Linux kernel HID drivers (bnc#1158824).

CVE-2019-19523: There was a use-after-free bug that can be caused by a malicious USB device in the drivers/usb/misc/adutux.c driver, aka CID-44efc269db79 (bnc#1158381 1158823 1158834).

CVE-2019-15213: There was a use-after-free caused by a malicious USB device in the drivers/media/usb/dvb-usb/dvb-usb-init.c driver (bnc#1146544).

CVE-2019-19531: There was a use-after-free bug that can be caused by a malicious USB device in the drivers/usb/misc/yurex.c driver (bnc#1158445).

CVE-2019-19543: There was a use-after-free in serial_ir_init_module() in drivers/media/rc/serial_ir.c (bnc#1158427).

CVE-2019-19525: There was a use-after-free bug that can be caused by a malicious USB device in the drivers/net/ieee802154/atusb.c driver (bnc#1158417).

CVE-2019-19530: There was a use-after-free bug that can be caused by a malicious USB device in the drivers/usb/class/cdc-acm.c driver (bnc#1158410).

CVE-2019-19536: There was an info-leak bug that can be caused by a malicious USB device in the drivers/net/can/usb/peak_usb/pcan_usb_pro.c driver (bnc#1158394).

CVE-2019-19524: There was a use-after-free bug that can be caused by a malicious USB device in the drivers/input/ff-memless.c driver (bnc#1158413).

CVE-2019-19528: There was a use-after-free bug that can be caused by a malicious USB device in the drivers/usb/misc/iowarrior.c driver (bnc#1158407).

CVE-2019-19534: There was an info-leak bug that can be caused by a malicious USB device in the drivers/net/can/usb/peak_usb/pcan_usb_core.c driver (bnc#1158398).

CVE-2019-19529: There was a use-after-free bug that can be caused by a malicious USB device in the drivers/net/can/usb/mcba_usb.c driver (bnc#1158381).

CVE-2019-14901: A heap overflow flaw was found in the Linux kernel in Marvell WiFi chip driver. The vulnerability allowed a remote attacker to cause a system crash, resulting in a denial of service, or execute arbitrary code. The highest threat with this vulnerability is with the availability of the system. If code execution occurs, the code will run with the permissions of root. This will affect both confidentiality and integrity of files on the system (bnc#1157042).

CVE-2019-14895: A heap-based buffer overflow was discovered in the Linux kernel in Marvell WiFi chip driver. The flaw could occur when the station attempts a connection negotiation during the handling of the remote devices country settings. This could have allowed the remote device to cause a denial of service (system crash) or possibly execute arbitrary code (bnc#1157158).

CVE-2019-18660: The Linux kernel on powerpc allowed Information Exposure because the Spectre-RSB mitigation is not in place for all applicable CPUs. This is related to arch/powerpc/kernel/entry_64.S and arch/powerpc/kernel/security.c (bnc#1157038).

CVE-2019-18683: An issue was discovered in drivers/media/platform/vivid in the Linux kernel. It is exploitable for privilege escalation on some Linux distributions where local users have /dev/video0 access, but only if the driver happens to be loaded.
There are multiple race conditions during streaming stopping in this driver (part of the V4L2 subsystem). These issues are caused by wrong mutex locking in vivid_stop_generating_vid_cap(), vivid_stop_generating_vid_out(), sdr_cap_stop_streaming(), and the corresponding kthreads. At least one of these race conditions leads to a use-after-free (bnc#1155897).

CVE-2019-18809: A memory leak in the af9005_identify_state() function in drivers/media/usb/dvb-usb/af9005.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) (bnc#1156258).

CVE-2019-19062: A memory leak in the crypto_report() function in crypto/crypto_user_base.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering crypto_report_alg() failures (bnc#1157333).

CVE-2019-19057: Two memory leaks in the mwifiex_pcie_init_evt_ring() function in drivers/net/wireless/marvell/mwifiex/pcie.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering mwifiex_map_pci_memory() failures (bnc#1157197).

CVE-2019-19056: A memory leak in the mwifiex_pcie_alloc_cmdrsp_buf() function in drivers/net/wireless/marvell/mwifiex/pcie.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering mwifiex_map_pci_memory() failures (bnc#1157197).

CVE-2019-19068: A memory leak in the rtl8xxxu_submit_int_urb() function in drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering usb_submit_urb() failures (bnc#1157307).

CVE-2019-19063: Two memory leaks in the rtl_usb_probe() function in drivers/net/wireless/realtek/rtlwifi/usb.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) (bnc#1157298).

CVE-2019-19227: In the AppleTalk subsystem in the Linux kernel there was a potential NULL pointer dereference because register_snap_client may return NULL. This will lead to denial of service in net/appletalk/aarp.c and net/appletalk/ddp.c, as demonstrated by unregister_snap_client (bnc#1157678).

CVE-2019-19065: A memory leak in the sdma_init() function in drivers/infiniband/hw/hfi1/sdma.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering rhashtable_init() failures (bnc#1157191).

CVE-2019-19077: A memory leak in the bnxt_re_create_srq() function in drivers/infiniband/hw/bnxt_re/ib_verbs.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering copy to udata failures (bnc#1157171).

CVE-2019-19052: A memory leak in the gs_can_open() function in drivers/net/can/usb/gs_usb.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering usb_submit_urb() failures (bnc#1157324).

CVE-2019-19067: Four memory leaks in the acp_hw_init() function in drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering mfd_add_hotplug_devices() or pm_genpd_add_device() failures (bsc#1157180).

CVE-2019-19060: A memory leak in the adis_update_scan_mode() function in drivers/iio/imu/adis_buffer.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) (bnc#1157178).

CVE-2019-19049: A memory leak in the unittest_data_add() function in drivers/of/unittest.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering of_fdt_unflatten_tree() failures (bsc#1157173).

CVE-2019-19075: A memory leak in the ca8210_probe() function in drivers/net/ieee802154/ca8210.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering ca8210_get_platform_data() failures (bnc#1157162).

CVE-2019-19058: A memory leak in the alloc_sgtable() function in drivers/net/wireless/intel/iwlwifi/fw/dbg.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering alloc_page() failures (bnc#1157145).

CVE-2019-19074: A memory leak in the ath9k_wmi_cmd() function in drivers/net/wireless/ath/ath9k/wmi.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) (bnc#1157143).

CVE-2019-19073: Fixed memory leaks in drivers/net/wireless/ath/ath9k/htc_hst.c allowed attackers to cause a denial of service (memory consumption) by triggering wait_for_completion_timeout() failures (bnc#1157070).

CVE-2019-15916: An issue was discovered in the Linux kernel There was a memory leak in register_queue_kobjects() in net/core/net-sysfs.c, which will cause denial of service (bnc#1149448).

CVE-2019-0154: Insufficient access control in subsystem for Intel (R) processor graphics in 6th, 7th, 8th and 9th Generation Intel(R) Core(TM) Processor Families; Intel(R) Pentium(R) Processor J, N, Silver and Gold Series; Intel(R) Celeron(R) Processor J, N, G3900 and G4900 Series; Intel(R) Atom(R) Processor A and E3900 Series; Intel(R) Xeon(R) Processor E3-1500 v5 and v6 and E-2100 Processor Families may have allowed an authenticated user to potentially enable denial of service via local access (bnc#1135966).

CVE-2019-16231: drivers/net/fjes/fjes_main.c in the Linux kernel 5.2.14 did not check the alloc_workqueue return value, leading to a NULL pointer dereference (bnc#1150466).

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The SUSE Linux Enterprise 12 SP 3 LTSS kernel was updated to receive various security and bugfixes.

The following security bugs were fixed :

CVE-2019-14895: A heap-based buffer overflow was discovered in the Linux kernel in Marvell WiFi chip driver. The flaw could occur when the station attempts a connection negotiation during the handling of the remote devices country settings. This could have allowed the remote device to cause a denial of service (system crash) or possibly execute arbitrary code (bnc#1157158).

CVE-2019-18660: The Linux kernel on powerpc allowed Information Exposure because the Spectre-RSB mitigation is not in place for all applicable CPUs. This is related to arch/powerpc/kernel/entry_64.S and arch/powerpc/kernel/security.c (bnc#1157038).

CVE-2019-18683: An issue was discovered in drivers/media/platform/vivid in the Linux kernel. It is exploitable for privilege escalation on some Linux distributions where local users have /dev/video0 access, but only if the driver happens to be loaded.
There are multiple race conditions during streaming stopping in this driver (part of the V4L2 subsystem). These issues are caused by wrong mutex locking in vivid_stop_generating_vid_cap(), vivid_stop_generating_vid_out(), sdr_cap_stop_streaming(), and the corresponding kthreads. At least one of these race conditions leads to a use-after-free (bnc#1155897).

CVE-2019-19062: A memory leak in the crypto_report() function in crypto/crypto_user_base.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering crypto_report_alg() failures (bnc#1157333).

CVE-2019-19065: A memory leak in the sdma_init() function in drivers/infiniband/hw/hfi1/sdma.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering rhashtable_init() failures (bnc#1157191).

CVE-2019-19052: A memory leak in the gs_can_open() function in drivers/net/can/usb/gs_usb.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering usb_submit_urb() failures (bnc#1157324).

CVE-2019-19074: A memory leak in the ath9k_wmi_cmd() function in drivers/net/wireless/ath/ath9k/wmi.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) (bnc#1157143).

CVE-2019-19073: Memory leaks in drivers/net/wireless/ath/ath9k/htc_hst.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering wait_for_completion_timeout() failures. This affects the htc_config_pipe_credits() function, the htc_setup_complete() function, and the htc_connect_service() function (bnc#1157070).

CVE-2019-16231: drivers/net/fjes/fjes_main.c in the Linux kernel 5.2.14 did not check the alloc_workqueue return value, leading to a NULL pointer dereference (bnc#1150466).

CVE-2019-18805: An issue was discovered in net/ipv4/sysctl_net_ipv4.c in the Linux kernel There was a net/ipv4/tcp_input.c signed integer overflow in tcp_ack_update_rtt() when userspace writes a very large integer to /proc/sys/net/ipv4/tcp_min_rtt_wlen, leading to a denial of service or possibly unspecified other impact (bnc#1156187).

CVE-2019-18680: An issue was discovered in the Linux kernel. There was a NULL pointer dereference in rds_tcp_kill_sock() in net/rds/tcp.c that will cause denial of service (bnc#1155898).

CVE-2019-15213: An use-after-free was fixed caused by malicious USB device in drivers/media/usb/dvb-usb/dvb-usb-init.c (bsc#1146544).

CVE-2019-19536: An uninitialized Kernel memory can leak to USB devices in drivers/net/can/usb/peak_usb/pcan_usb_pro.c (bsc#1158394).

CVE-2019-19534: An uninitialized Kernel memory can leak to USB devices in drivers/net/can/usb/peak_usb/pcan_usb_core.c (bsc#1158398).

CVE-2019-19530: An use-after-free bug that can be caused by a malicious USB device in the drivers/usb/class/cdc-acm.c driver (bsc#1158410).

CVE-2019-19524: An use-after-free bug that can be caused by a malicious USB device in the drivers/input/ff-memless.c driver (bsc#1158413).

CVE-2019-19525: An use-after-free bug that can be caused by a malicious USB device in the drivers/net/ieee802154/atusb.c driver (bsc#1158417).

CVE-2019-19531: An use-after-free in yurex_delete may lead to denial of service (bsc#1158445).

CVE-2019-19523: An use-after-free on disconnect in USB adutux (bsc#1158823).

CVE-2019-19532: An out-of-bounds write bugs that can be caused by a malicious USB device in the Linux kernel HID drivers (bsc#1158824).

CVE-2019-19332: An out-of-bounds memory write via kvm_dev_ioctl_get_cpuid (bsc#1158827).

CVE-2019-19533: An info-leak bug that can be caused by a malicious USB device in the drivers/media/usb/ttusb-dec/ttusb_dec.c driver (bsc#1158834).

CVE-2019-19527: An use-after-free bug that can be caused by a malicious USB device in the drivers/hid/usbhid/hiddev.c driver (bsc#1158900).

CVE-2019-19535: An info-leak bug that can be caused by a malicious USB device in the drivers/net/can/usb/peak_usb/pcan_usb_fd.c driver (bsc#1158903).

CVE-2019-19537: Two races in the USB character device registration and deregistration routines (bsc#1158904).

CVE-2019-19338: An incomplete fix for Transaction Asynchronous Abort (TAA) (bsc#1158954).

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:4609 advisory.

  - kernel: kernel pointer leak due to WARN_ON statement in video driver leads to local information disclosure     (CVE-2019-9455)

  - kernel: use after free due to race condition in the video driver leads to local privilege escalation     (CVE-2019-9458)

  - kernel: use-after-free in drivers/bluetooth/hci_ldisc.c (CVE-2019-15917)

  - kernel: out-of-bounds access in function hclge_tm_schd_mode_vnet_base_cfg (CVE-2019-15925)

  - kernel: null-pointer dereference in drivers/net/fjes/fjes_main.c (CVE-2019-16231)

  - kernel: null pointer dereference in drivers/scsi/qla2xxx/qla_os.c (CVE-2019-16233)

  - kernel: memory leak in ccp_run_sha_cmd() function in drivers/crypto/ccp/ccp-ops.c (CVE-2019-18808)

  - kernel: memory leak in  af9005_identify_state() function in drivers/media/usb/dvb-usb/af9005.c     (CVE-2019-18809)

  - kernel: Denial Of Service in the __ipmi_bmc_register() function in drivers/char/ipmi/ipmi_msghandler.c     (CVE-2019-19046)

  - kernel: A memory leak in the mwifiex_pcie_alloc_cmdrsp_buf() function in     drivers/net/wireless/marvell/mwifiex/pcie.c allows to cause DoS (CVE-2019-19056)

  - kernel: memory leak in the crypto_report() function in crypto/crypto_user_base.c allows for DoS     (CVE-2019-19062)

  - kernel: Two memory leaks in the rtl_usb_probe() function in drivers/net/wireless/realtek/rtlwifi/usb.c     allow for a DoS (CVE-2019-19063)

  - kernel: A memory leak in the rtl8xxxu_submit_int_urb() function in     drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c allows for a DoS (CVE-2019-19068)

  - kernel: A memory leak in the predicate_parse() function in kernel/trace/trace_events_filter.c allows for a     DoS (CVE-2019-19072)

  - kernel: out-of-bounds write in ext4_xattr_set_entry in fs/ext4/xattr.c (CVE-2019-19319)

  - Kernel: kvm: OOB memory write via kvm_dev_ioctl_get_cpuid (CVE-2019-19332)

  - kernel: mounting a crafted ext4 filesystem image, performing some operations, and unmounting can lead to a     use-after-free in ext4_put_super in fs/ext4/super.c (CVE-2019-19447)

  - kernel: a malicious USB device in the drivers/input/ff-memless.c leads to use-after-free (CVE-2019-19524)

  - kernel: information leak bug caused  by a malicious USB device in the drivers/media/usb/ttusb-     dec/ttusb_dec.c (CVE-2019-19533)

  - kernel: race condition caused by a malicious USB device in the USB character device driver layer     (CVE-2019-19537)

  - kernel: use-after-free in serial_ir_init_module() in drivers/media/rc/serial_ir.c (CVE-2019-19543)

  - kernel: use-after-free in __ext4_expand_extra_isize and ext4_xattr_set_entry related to fs/ext4/inode.c     and fs/ext4/super.c (CVE-2019-19767)

  - kernel: use-after-free in debugfs_remove in fs/debugfs/inode.c (CVE-2019-19770)

  - kernel: Null pointer dereference in drop_sysctl_table() in fs/proc/proc_sysctl.c (CVE-2019-20054)

  - kernel: out-of-bounds write via crafted keycode table (CVE-2019-20636)

  - kernel: possible use-after-free due to a race condition in cdev_get of char_dev.c (CVE-2020-0305)

  - kernel: out-of-bounds read in in vc_do_resize function in drivers/tty/vt/vt.c (CVE-2020-8647)

  - kernel: use-after-free in n_tty_receive_buf_common function in drivers/tty/n_tty.c (CVE-2020-8648)

  - kernel: invalid read location in vgacon_invert_region function in drivers/video/console/vgacon.c     (CVE-2020-8649)

  - kernel: uninitialized kernel data leak in userspace coredumps (CVE-2020-10732)

  - kernel: SELinux netlink permission check bypass (CVE-2020-10751)

  - kernel: possibility of memory disclosure when reading the file /proc/sys/kernel/rh_features     (CVE-2020-10774)

  - kernel: vhost-net: stack overflow in get_raw_socket while checking sk_family field (CVE-2020-10942)

  - kernel: out-of-bounds write in mpol_parse_str function in mm/mempolicy.c (CVE-2020-11565)

  - kernel: mishandles invalid descriptors in drivers/media/usb/gspca/xirlink_cit.c (CVE-2020-11668)

  - kernel: sync of excessive duration via an XFS v5 image with crafted metadata (CVE-2020-12655)

  - kernel: xdp_umem_reg in net/xdp/xdp_umem.c has an out-of-bounds write which could result in crash and data     coruption (CVE-2020-12659)

  - kernel: sg_write function lacks an sg_remove_request call in a certain failure case (CVE-2020-12770)

  - kernel: possible to send arbitrary signals to a privileged (suidroot) parent process (CVE-2020-12826)

  - kernel: referencing inode of removed superblock in get_futex_key() causes UAF (CVE-2020-14381)

  - kernel: soft-lockups in iov_iter_copy_from_user_atomic() could result in DoS (CVE-2020-25641)

  - kernel: use-after-free in route4_change() in net/sched/cls_route.c (CVE-2021-3715)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The SUSE Linux Enterprise 12 SP5 Azure kernel was updated to receive various security and bugfixes.

The following security bugs were fixed :

CVE-2019-20095: mwifiex_tm_cmd in drivers/net/wireless/marvell/mwifiex/cfg80211.c had some error-handling cases that did not free allocated hostcmd memory. This will cause a memory leak and denial of service (bnc#1159909).

CVE-2019-20054: Fixed a a NULL pointer dereference in drop_sysctl_table() in fs/proc/proc_sysctl.c, related to put_links (bnc#1159910).

CVE-2019-20096: Fixed a memory leak in __feat_register_sp() in net/dccp/feat.c, which may cause denial of service (bnc#1159908).

CVE-2019-19966: Fixed a use-after-free in cpia2_exit() in drivers/media/usb/cpia2/cpia2_v4l.c that will cause denial of service (bnc#1159841).

CVE-2019-19447: Mounting a crafted ext4 filesystem image, performing some operations, and unmounting can lead to a use-after-free in ext4_put_super in fs/ext4/super.c, related to dump_orphan_list in fs/ext4/super.c (bnc#1158819).

CVE-2019-19319: A setxattr operation, after a mount of a crafted ext4 image, can cause a slab-out-of-bounds write access because of an ext4_xattr_set_entry use-after-free in fs/ext4/xattr.c when a large old_size value is used in a memset call (bnc#1158021).

CVE-2019-19767: Fixed mishandling of ext4_expand_extra_isize, as demonstrated by use-after-free errors in __ext4_expand_extra_isize and ext4_xattr_set_entry, related to fs/ext4/inode.c and fs/ext4/super.c (bnc#1159297).

CVE-2019-18808: A memory leak in the ccp_run_sha_cmd() function in drivers/crypto/ccp/ccp-ops.c allowed attackers to cause a denial of service (memory consumption) (bnc#1156259).

CVE-2019-16746: An issue was discovered in net/wireless/nl80211.c where the length of variable elements in a beacon head were not checked, leading to a buffer overflow (bnc#1152107).

CVE-2019-19066: A memory leak in the bfad_im_get_stats() function in drivers/scsi/bfa/bfad_attr.c allowed attackers to cause a denial of service (memory consumption) by triggering bfa_port_get_stats() failures (bnc#1157303).

CVE-2019-19051: There was a memory leak in the i2400m_op_rfkill_sw_toggle() function in drivers/net/wimax/i2400m/op-rfkill.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) (bnc#1159024).

CVE-2019-19338: There was an incomplete fix for Transaction Asynchronous Abort (TAA) (bnc#1158954).

CVE-2019-19332: There was an OOB memory write via kvm_dev_ioctl_get_cpuid (bnc#1158827).

CVE-2019-19537: There was a race condition bug that can be caused by a malicious USB device in the USB character device driver layer (bnc#1158904).

CVE-2019-19535: There was an info-leak bug that can be caused by a malicious USB device in the drivers/net/can/usb/peak_usb/pcan_usb_fd.c driver (bnc#1158903).

CVE-2019-19527: There was a use-after-free bug that can be caused by a malicious USB device in the drivers/hid/usbhid/hiddev.c driver (bnc#1158900).

CVE-2019-19526: There was a use-after-free bug that can be caused by a malicious USB device in the drivers/nfc/pn533/usb.c driver (bnc#1158893).

CVE-2019-19533: There was an info-leak bug that can be caused by a malicious USB device in the drivers/media/usb/ttusb-dec/ttusb_dec.c driver (bnc#1158834).

CVE-2019-19532: There were multiple out-of-bounds write bugs that can be caused by a malicious USB device in the Linux kernel HID drivers (bnc#1158824).

CVE-2019-19523: There was a use-after-free bug that can be caused by a malicious USB device in the drivers/usb/misc/adutux.c driver, aka CID-44efc269db79 (bnc#1158381 1158823 1158834).

CVE-2019-15213: There was a use-after-free caused by a malicious USB device in the drivers/media/usb/dvb-usb/dvb-usb-init.c driver (bnc#1146544).

CVE-2019-19531: There was a use-after-free bug that can be caused by a malicious USB device in the drivers/usb/misc/yurex.c driver (bnc#1158445).

CVE-2019-19543: There was a use-after-free in serial_ir_init_module() in drivers/media/rc/serial_ir.c (bnc#1158427).

CVE-2019-19525: There was a use-after-free bug that can be caused by a malicious USB device in the drivers/net/ieee802154/atusb.c driver (bnc#1158417).

CVE-2019-19530: There was a use-after-free bug that can be caused by a malicious USB device in the drivers/usb/class/cdc-acm.c driver (bnc#1158410).

CVE-2019-19536: There was an info-leak bug that can be caused by a malicious USB device in the drivers/net/can/usb/peak_usb/pcan_usb_pro.c driver (bnc#1158394).

CVE-2019-19524: There was a use-after-free bug that can be caused by a malicious USB device in the drivers/input/ff-memless.c driver (bnc#1158413).

CVE-2019-19528: There was a use-after-free bug that can be caused by a malicious USB device in the drivers/usb/misc/iowarrior.c driver (bnc#1158407).

CVE-2019-19534: There was an info-leak bug that can be caused by a malicious USB device in the drivers/net/can/usb/peak_usb/pcan_usb_core.c driver (bnc#1158398).

CVE-2019-19529: There was a use-after-free bug that can be caused by a malicious USB device in the drivers/net/can/usb/mcba_usb.c driver (bnc#1158381).

CVE-2019-14901: A heap overflow flaw was found in the Linux kernel in Marvell WiFi chip driver. The vulnerability allowed a remote attacker to cause a system crash, resulting in a denial of service, or execute arbitrary code. The highest threat with this vulnerability is with the availability of the system. If code execution occurs, the code will run with the permissions of root. This will affect both confidentiality and integrity of files on the system (bnc#1157042).

CVE-2019-14895: A heap-based buffer overflow was discovered in the Linux kernel in Marvell WiFi chip driver. The flaw could occur when the station attempts a connection negotiation during the handling of the remote devices country settings. This could have allowed the remote device to cause a denial of service (system crash) or possibly execute arbitrary code (bnc#1157158).

CVE-2019-18660: The Linux kernel on powerpc allowed Information Exposure because the Spectre-RSB mitigation is not in place for all applicable CPUs. This is related to arch/powerpc/kernel/entry_64.S and arch/powerpc/kernel/security.c (bnc#1157038).

CVE-2019-18683: An issue was discovered in drivers/media/platform/vivid in the Linux kernel. It is exploitable for privilege escalation on some Linux distributions where local users have /dev/video0 access, but only if the driver happens to be loaded.
There are multiple race conditions during streaming stopping in this driver (part of the V4L2 subsystem). These issues are caused by wrong mutex locking in vivid_stop_generating_vid_cap(), vivid_stop_generating_vid_out(), sdr_cap_stop_streaming(), and the corresponding kthreads. At least one of these race conditions leads to a use-after-free (bnc#1155897).

CVE-2019-18809: A memory leak in the af9005_identify_state() function in drivers/media/usb/dvb-usb/af9005.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) (bnc#1156258).

CVE-2019-19046: A memory leak in the __ipmi_bmc_register() function in drivers/char/ipmi/ipmi_msghandler.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering ida_simple_get() failure (bnc#1157304).

CVE-2019-19078: A memory leak in the ath10k_usb_hif_tx_sg() function in drivers/net/wireless/ath/ath10k/usb.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering usb_submit_urb() failures (bnc#1157032).

CVE-2019-19062: A memory leak in the crypto_report() function in crypto/crypto_user_base.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering crypto_report_alg() failures (bnc#1157333).

CVE-2019-19057: Two memory leaks in the mwifiex_pcie_init_evt_ring() function in drivers/net/wireless/marvell/mwifiex/pcie.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering mwifiex_map_pci_memory() failures (bnc#1157197).

CVE-2019-19056: A memory leak in the mwifiex_pcie_alloc_cmdrsp_buf() function in drivers/net/wireless/marvell/mwifiex/pcie.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering mwifiex_map_pci_memory() failures (bnc#1157197).

CVE-2019-19068: A memory leak in the rtl8xxxu_submit_int_urb() function in drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering usb_submit_urb() failures (bnc#1157307).

CVE-2019-19063: Two memory leaks in the rtl_usb_probe() function in drivers/net/wireless/realtek/rtlwifi/usb.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) (bnc#1157298).

CVE-2019-19227: In the AppleTalk subsystem in the Linux kernel there was a potential NULL pointer dereference because register_snap_client may return NULL. This will lead to denial of service in net/appletalk/aarp.c and net/appletalk/ddp.c, as demonstrated by unregister_snap_client (bnc#1157678).

CVE-2019-19081: A memory leak in the nfp_flower_spawn_vnic_reprs() function in drivers/net/ethernet/netronome/nfp/flower/main.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) (bnc#1157045).

CVE-2019-19080: Four memory leaks in the nfp_flower_spawn_phy_reprs() function in drivers/net/ethernet/netronome/nfp/flower/main.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) (bnc#1157044).

CVE-2019-19065: A memory leak in the sdma_init() function in drivers/infiniband/hw/hfi1/sdma.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering rhashtable_init() failures (bnc#1157191).

CVE-2019-19077: A memory leak in the bnxt_re_create_srq() function in drivers/infiniband/hw/bnxt_re/ib_verbs.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering copy to udata failures (bnc#1157171).

CVE-2019-19052: A memory leak in the gs_can_open() function in drivers/net/can/usb/gs_usb.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering usb_submit_urb() failures (bnc#1157324).

CVE-2019-19067: Four memory leaks in the acp_hw_init() function in drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering mfd_add_hotplug_devices() or pm_genpd_add_device() failures (bsc#1157180).

CVE-2019-19060: A memory leak in the adis_update_scan_mode() function in drivers/iio/imu/adis_buffer.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) (bnc#1157178).

CVE-2019-19049: A memory leak in the unittest_data_add() function in drivers/of/unittest.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering of_fdt_unflatten_tree() failures (bsc#1157173).

CVE-2019-19075: A memory leak in the ca8210_probe() function in drivers/net/ieee802154/ca8210.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering ca8210_get_platform_data() failures (bnc#1157162).

CVE-2019-19058: A memory leak in the alloc_sgtable() function in drivers/net/wireless/intel/iwlwifi/fw/dbg.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering alloc_page() failures (bnc#1157145).

CVE-2019-19074: A memory leak in the ath9k_wmi_cmd() function in drivers/net/wireless/ath/ath9k/wmi.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) (bnc#1157143).

CVE-2019-19073: Fixed memory leaks in drivers/net/wireless/ath/ath9k/htc_hst.c allowed attackers to cause a denial of service (memory consumption) by triggering wait_for_completion_timeout() failures (bnc#1157070).

CVE-2019-19083: Memory leaks in *clock_source_create() functions under drivers/gpu/drm/amd/display/dc in the Linux kernel allowed attackers to cause a denial of service (memory consumption) (bnc#1157049).

CVE-2019-19082: Memory leaks in *create_resource_pool() functions under drivers/gpu/drm/amd/display/dc in the Linux kernel allowed attackers to cause a denial of service (memory consumption) (bnc#1157046).

CVE-2019-15916: An issue was discovered in the Linux kernel There was a memory leak in register_queue_kobjects() in net/core/net-sysfs.c, which will cause denial of service (bnc#1149448).

CVE-2019-0154: Insufficient access control in subsystem for Intel (R) processor graphics in 6th, 7th, 8th and 9th Generation Intel(R) Core(TM) Processor Families; Intel(R) Pentium(R) Processor J, N, Silver and Gold Series; Intel(R) Celeron(R) Processor J, N, G3900 and G4900 Series; Intel(R) Atom(R) Processor A and E3900 Series; Intel(R) Xeon(R) Processor E3-1500 v5 and v6 and E-2100 Processor Families may have allowed an authenticated user to potentially enable denial of service via local access (bnc#1135966).

CVE-2019-0155: Insufficient access control in a subsystem for Intel (R) processor graphics in 6th, 7th, 8th and 9th Generation Intel(R) Core(TM) Processor Families; Intel(R) Pentium(R) Processor J, N, Silver and Gold Series; Intel(R) Celeron(R) Processor J, N, G3900 and G4900 Series; Intel(R) Atom(R) Processor A and E3900 Series; Intel(R) Xeon(R) Processor E3-1500 v5 and v6, E-2100 and E-2200 Processor Families; Intel(R) Graphics Driver for Windows (DCH) or 26.20.100.6812 and before 21.20.x.5077 (aka15.45.5077), i915 Linux Driver for Intel(R) Processor Graphics before versions 5.4-rc7, 5.3.11, 4.19.84, 4.14.154, 4.9.201, 4.4.201 may have allowed an authenticated user to potentially enable escalation of privilege via local access (bnc#1135967).

CVE-2019-16231: drivers/net/fjes/fjes_main.c in the Linux kernel 5.2.14 did not check the alloc_workqueue return value, leading to a NULL pointer dereference (bnc#1150466).

CVE-2019-18805: An issue was discovered in net/ipv4/sysctl_net_ipv4.c in the Linux kernel There was a net/ipv4/tcp_input.c signed integer overflow in tcp_ack_update_rtt() when userspace writes a very large integer to /proc/sys/net/ipv4/tcp_min_rtt_wlen, leading to a denial of service or possibly unspecified other impact (bnc#1156187).

CVE-2019-17055: base_sock_create in drivers/isdn/mISDN/socket.c in the AF_ISDN network module in the Linux kernel did not enforce CAP_NET_RAW, which means that unprivileged users can create a raw socket (bnc#1152782).

CVE-2019-16995: In the Linux kernel before 5.0.3, a memory leak exits in hsr_dev_finalize() in net/hsr/hsr_device.c if hsr_add_port fails to add a port, which may cause denial of service, aka CID-6caabe7f197d (bnc#1152685).

CVE-2019-11135: TSX Asynchronous Abort condition on some CPUs utilizing speculative execution may have allowed an authenticated user to potentially enable information disclosure via a side channel with local access (bnc#1139073).

CVE-2019-16233: drivers/scsi/qla2xxx/qla_os.c in the Linux kernel 5.2.14 did not check the alloc_workqueue return value, leading to a NULL pointer dereference (bnc#1150457).

CVE-2018-12207: Improper invalidation for page table updates by a virtual guest operating system for multiple Intel(R) Processors may have allowed an authenticated user to potentially enable denial of service of the host system via local access (bnc#1117665).

CVE-2019-10220: Linux kernel CIFS implementation, version 4.9.0 is vulnerable to a relative paths injection in directory entry lists (bnc#1144903).

CVE-2019-17666: rtl_p2p_noa_ie in drivers/net/wireless/realtek/rtlwifi/ps.c in the Linux kernel lacks a certain upper-bound check, leading to a buffer overflow (bnc#1154372).

CVE-2019-16232: drivers/net/wireless/marvell/libertas/if_sdio.c did not check the alloc_workqueue return value, leading to a NULL pointer dereference (bnc#1150465).

CVE-2019-16234: drivers/net/wireless/intel/iwlwifi/pcie/trans.c did not check the alloc_workqueue return value, leading to a NULL pointer dereference (bnc#1150452).

CVE-2019-17133: cfg80211_mgd_wext_giwessid in net/wireless/wext-sme.c did not reject a long SSID IE, leading to a Buffer Overflow (bnc#1153158).

CVE-2019-17056: llcp_sock_create in net/nfc/llcp_sock.c in the AF_NFC network module in the Linux kernel did not enforce CAP_NET_RAW, which means that unprivileged users can create a raw socket, aka CID-3a359798b176 (bnc#1152788).

CVE-2019-14821: An out-of-bounds access issue was found in the way Linux kernel's KVM hypervisor implements the Coalesced MMIO write operation (bnc#1151350).

CVE-2017-18595: An issue was discovered in the Linux kernel A double free may be caused by the function allocate_trace_buffer in the file kernel/trace/trace.c (bnc#1149555).

CVE-2019-9506: The Bluetooth BR/EDR specification up to and including version 5.1 permits sufficiently low encryption key length and did not prevent an attacker from influencing the key length negotiation. This allowed practical brute-force attacks (aka 'KNOB') that can decrypt traffic and inject arbitrary ciphertext without the victim noticing (bnc#1146042).

CVE-2019-14835: A buffer overflow flaw was found in the way Linux kernel's vhost functionality that translates virtqueue buffers to IOVs, logged the buffer descriptors during migration (bnc#1150112).

CVE-2019-9456: Ther is an issue inside the USB monitor driver that can lead to a possible OOB write due to a missing bounds check (bnc#1150025).

CVE-2019-15031: In the Linux kernel on the powerpc platform, a local user can read vector registers of other users' processes via an interrupt (bnc#1149713).

CVE-2019-15030: In the Linux kernel on the powerpc platform, a local user can read vector registers of other users' processes via a Facility Unavailable exception (bnc#1149713).

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

在 Linux 内核中发现多个漏洞，可能导致权限升级、拒绝服务或信息泄漏。

CVE-2019-2215

syzkaller 工具发现 Android 绑定驱动程序中存在释放后使用漏洞。已启用此驱动程序的系统上的本地用户可利用此漏洞造成拒绝服务（内存损坏或崩溃），或可能造成权限提升。但是，此驱动程序在 Debian 打包内核中并未启用。

CVE-2019-10220

许多开发人员和研究人员发现，如果构建的文件系统或恶意文件服务器提供文件名包括“/”字符的目录，这会混淆并可能导致读取该目录的应用程序中的安全检查失败。

内核现在将在读取此类目录时返回错误，而非将无效的文件名传递到用户空间。

CVE-2019-14895、CVE-2019-14901

Venustech 的 ADLab 发现 mwifiex wifi 驱动程序中可能存在堆缓冲区溢出。在使用此驱动程序的系统上，恶意的无线接入点或 adhoc/P2P 对等机会利用这些漏洞，造成拒绝服务（内存损坏或崩溃），或可能招致远程代码执行。

CVE-2019-14896、CVE-2019-14897

Venustech 的 ADLab 发现 libertas wifi 驱动程序中可能存在堆和堆栈缓冲区溢出。在使用此驱动程序的系统上，恶意的无线接入点或 adhoc/P2P 对等机会利用这些漏洞，造成拒绝服务（内存损坏或崩溃），或可能招致远程代码执行。

CVE-2019-15098

Hui Peng 和 Mathias Payer 报告称，ath6kl wifi 驱动程序未正确验证 USB 描述符，这可导致空指针取消引用。能够添加 USB 设备的攻击者可利用此问题造成拒绝服务（缺陷/错误）。

CVE-2019-15217

syzkaller 工具发现，zr364xx 媒体驱动程序未正确处理不含产品名称字符串的设备，这可导致空指针取消引用。能够添加 USB 设备的攻击者可利用此问题造成拒绝服务（缺陷/错误）。

CVE-2019-15291

syzkaller 工具发现，b2c2-flexcop-usb 媒体驱动程序未正确验证 USB 描述符，这可导致空指针取消引用。能够添加 USB 设备的攻击者可利用此问题造成拒绝服务（缺陷/错误）。

CVE-2019-15505

syzkaller 工具发现，technisat-usb2 媒体驱动程序未正确验证传入的 IR 数据包，这可导致堆缓冲区过度读取。能够添加 USB 设备的攻击者可利用此问题造成拒绝服务（缺陷/错误）或从内核内存读取敏感信息。

CVE-2019-16746

发现 wifi 堆栈在接入点模式下，未验证 wifi 接口上使用的用户空间提供的 beacon 标头内容，这可导致堆缓冲区溢出。有权限配置 wifi 接口的本地用户可利用此问题造成拒绝服务（内存损坏或崩溃），或可能造成权限提升。

CVE-2019-17052、CVE-2019-17053、CVE-2019-17054、CVE-2019-17055、CVE-2019-17056

Ori Nimron 报告称，多种网络协议实现

  - AX.25、IEEE 802.15.4、Appletalk、ISDN 和 NFC - 允许所有用户创建原始套接字。本地用户可利用此漏洞，在使用这些协议的网络上发送任意数据包。

CVE-2019-17133

Nicholas Waisman 报告称，wifi 堆栈未能在复制前验证收到的 SSID 信息，这可能会在未经驱动程序或固件验证时导致缓冲区溢出。恶意的无线接入点可能利用此漏洞，造成拒绝服务（内存损坏或崩溃），或可能招致远程代码执行。

CVE-2019-17666

Nicholas Waisman 报告称，rtlwifi wifi 驱动程序未正确验证接收到的 P2P 信息，从而导致缓冲区溢出。恶意的 P2P 对等机可利用此漏洞，造成拒绝服务（内存损坏或崩溃），或可能招致远程代码执行。

CVE-2019-19051

Navid Emamdoost 发现，如果软件 rfkill 操作失败，i2400m wimax 驱动程序中可能出现内存泄漏。此漏洞的安全影响尚不明确。

CVE-2019-19052

Navid Emamdoost 发现，如果开放（接口被激活）操作失败，gs_usb CAN 驱动程序中可能出现内存泄漏。此漏洞的安全影响尚不明确。

CVE-2019-19056、CVE-2019-19057

Navid Emamdoost 发现，如果探针操作失败，mwifiex wifi 驱动程序中可能出现内存泄漏。此漏洞的安全影响尚不明确。

CVE-2019-19062

Navid Emamdoost 发现，如果 CRYPTO_MSG_GETALG 操作失败，AF_ALG 子系统中可能会出现内存泄漏。本地用户可利用此漏洞造成拒绝服务（内存耗尽）。

CVE-2019-19066

Navid Emamdoost 发现，如果 get_fc_host_stats 操作失败，bfa SCSI 驱动程序中可能出现内存泄漏。此漏洞的安全影响尚不明确。

CVE-2019-19227

Dan Carpenter 报告称，Appletalk 协议实现中缺少错误检查会导致空指针取消引用。此漏洞的安全影响尚不明确。

CVE-2019-19332

syzkaller 工具发现，x86 的 KVM 实现中缺少边界检查，这可导致堆缓冲区溢出。有权使用 KVM 的本地用户可利用此漏洞造成拒绝服务（内存损坏或崩溃），或可能造成权限提升。

CVE-2019-19523

syzkaller 工具发现 adutux USB 驱动程序中存在释放后使用缺陷。能够添加和删除 USB 设备的攻击者可利用此错误造成拒绝服务（内存损坏或崩溃），或可能造成权限提升。

CVE-2019-19524

syzkaller 工具在输入驱动程序使用的 ff-memless 库中发现争用条件。能够添加和删除 USB 设备的攻击者可利用此错误造成拒绝服务（内存损坏或崩溃），或可能造成权限提升。

CVE-2019-19527

syzkaller 工具发现，hiddev 驱动程序未正确处理打开设备任务与断开底层硬件之间的争用。有权访问 hiddev 设备、能够添加和删除 USB 设备的本地用户可利用此漏洞造成拒绝服务（内存损坏或崩溃），或可能造成权限提升。

CVE-2019-19530

syzkaller 工具发现 cdc-acm 网络驱动程序中可能存在释放后使用漏洞。能够添加 USB 设备的攻击者可利用此错误造成拒绝服务（内存损坏或崩溃），或可能造成权限提升。

CVE-2019-19531

syzkaller 工具发现 yurex USB 驱动程序中存在释放后使用缺陷。能够添加和删除 USB 设备的攻击者可利用此错误造成拒绝服务（内存损坏或崩溃），或可能造成权限提升。

CVE-2019-19532

syzkaller 工具发现，hid-gaff 输入驱动程序中可能存在堆缓冲区溢出，并且其他许多输入驱动程序中也存在此问题。能够添加 USB 设备的攻击者可利用此错误造成拒绝服务（内存损坏或崩溃），或可能造成权限提升。

CVE-2019-19533

syzkaller 工具发现，ttusb-dec 媒体驱动程序缺少结构初始化，这可能导致从内核内存泄漏敏感信息。

CVE-2019-19534、CVE-2019-19536

syzkaller 工具发现，peak_usb CAN 驱动程序缺少部分结构初始化，这可能导致从内核内存泄漏敏感信息。

CVE-2019-19537

syzkaller 工具发现，USB 堆栈中存在涉及字符设备注册的争用条件。能够添加 USB 设备的攻击者可利用此错误造成拒绝服务（内存损坏或崩溃），或可能造成权限提升。

CVE-2019-19767

syzkaller 工具发现，构建的 ext4 卷可在 ext4 文件系统驱动程序中触发缓冲区溢出。能够挂载此类卷的攻击者可利用此问题造成拒绝服务（内存损坏或崩溃），或可能造成权限提升。

CVE-2019-19922

发现 Linux 3.16.61 中的更改“sched/fair：修复带宽定时器时钟漂移情况”可导致任务在使用其完整 CPU 时间配额之前节流。本地用户可利用此缺陷拖慢其他用户的任务。此更改现已恢复。

CVE-2019-19947

发现 kvaser_usb CAN 驱动程序缺少部分结构初始化，这可能导致从内核内存泄漏敏感信息。

CVE-2019-19965

Gao Chuan 报告称，SCSI 主机驱动程序使用的 libsas 库中存在争用条件，这可导致空指针取消引用。能够添加和删除 SCSI 设备的攻击者可利用此问题造成拒绝服务（缺陷/错误）。

CVE-2019-19966

syzkaller 工具发现 cpia2 媒体驱动程序中缺少错误检查，这可导致释放后使用漏洞。能够添加 USB 设备的攻击者可利用此错误造成拒绝服务（内存损坏或崩溃），或可能造成权限提升。

对于 Debian 8“Jessie”，已在 3.16.81-1 版本中修复这些问题。

建议您升级 linux 程序包。

注意：Tenable Network Security 已直接从 DLA 安全公告中提取上述描述块。Tenable 已尝试在不引入其他问题的情况下，尽可能进行自动清理和排版。

在 Linux 内核中发现多个可能导致权限升级、拒绝服务或信息泄漏的漏洞。

CVE-2018-13093、CVE-2018-13094

Gatech SSLab 的 Wen Xu 报告称，挂载和操作特制 XFS 卷时，可能会触发多个空指针取消引用缺陷。能够挂载任意 XFS 卷的攻击者可利用此问题造成拒绝服务（崩溃）。

CVE-2018-20976

XFS 文件系统实现中发现未正确处理某些挂载失败的情况，可能会造成释放后使用。此漏洞的安全影响尚不明确。

CVE-2018-21008

rsi wifi 驱动系统中发现未正确处理某些失败的情况，可能会造成释放后使用。此漏洞的安全影响尚不明确。

CVE-2019-0136

wifi soft-MAC 实现 (mac80211) 中发现未正确验证通道直接链路建立 (TDLS) 消息。
邻近的攻击者可能会利用此漏洞造成拒绝服务（wifi 连接丢失）。

CVE-2019-2215

syzkaller 工具发现 Android 绑定驱动程序中存在释放后使用漏洞。已启用此驱动程序的系统上的本地用户可利用此漏洞造成拒绝服务（内存损坏或崩溃），或可能造成权限提升。但是，此驱动程序在 Debian 打包内核中并未启用。

CVE-2019-10220

许多开发人员和研究人员发现，如果构建的文件系统或恶意文件服务器提供文件名包括“/”字符的目录，这会混淆并可能导致读取该目录的应用程序中的安全检查失败。

内核现在将在读取此类目录时返回错误，而非将无效的文件名传递到用户空间。

CVE-2019-14615

发现 Intel 第 9 代和第 10 代 GPU 在上下文切换期间未清除用户可见状态，从而导致 GPU 任务之间的信息泄漏。此问题已在 i915 驱动程序中得到缓解。

受影响的芯片（第 9 代和第 10 代）列于 <https://en.wikipedia.org/wiki/List_of_Intel_graphics_proces sing_units#Gen9> 处。

CVE-2019-14814、CVE-2019-14815、CVE-2019-14816

mwifiex wifi 驱动程序中发现多个缺陷，这可能会造成堆缓冲区溢出。有权限配置此驱动程序处理的设备的本地用户可能会利用此缺陷造成权限提升。

CVE-2019-14895、CVE-2019-14901

Venustech 的 ADLab 发现 mwifiex wifi 驱动程序中可能存在堆缓冲区溢出。在使用此驱动程序的系统上，恶意的无线接入点或 adhoc/P2P 对等机会利用这些漏洞，造成拒绝服务（内存损坏或崩溃），或可能招致远程代码执行。

CVE-2019-14896、CVE-2019-14897

Venustech 的 ADLab 发现 libertas wifi 驱动程序中可能存在堆和堆栈缓冲区溢出。在使用此驱动程序的系统上，恶意的无线接入点或 adhoc/P2P 对等机会利用这些漏洞，造成拒绝服务（内存损坏或崩溃），或可能招致远程代码执行。

CVE-2019-15098

Hui Peng 和 Mathias Payer 报告称，ath6kl wifi 驱动程序未正确验证 USB 描述符，这可导致空指针取消引用。能够添加 USB 设备的攻击者可利用此问题造成拒绝服务（缺陷/错误）。

CVE-2019-15217

syzkaller 工具发现，zr364xx 媒体驱动程序未正确处理不含产品名称字符串的设备，这可导致空指针取消引用。能够添加 USB 设备的攻击者可利用此问题造成拒绝服务（缺陷/错误）。

CVE-2019-15291

syzkaller 工具发现，b2c2-flexcop-usb 媒体驱动程序未正确验证 USB 描述符，这可导致空指针取消引用。能够添加 USB 设备的攻击者可利用此问题造成拒绝服务（缺陷/错误）。

CVE-2019-15505

syzkaller 工具发现，technisat-usb2 媒体驱动程序未正确验证传入的 IR 数据包，这可导致堆缓冲区过度读取。能够添加 USB 设备的攻击者可利用此问题造成拒绝服务（缺陷/错误）或从内核内存读取敏感信息。

CVE-2019-15917

syzkaller 工具发现，连接有 UART 的蓝牙适配器的支持代码中存在争用条件，可能会造成释放后使用。可访问 pty 设备或其他适合的 tty 设备的本地用户可利用此错误造成拒绝服务（内存损坏或崩溃），或可能造成权限提升。

CVE-2019-16746

发现 wifi 堆栈在接入点模式下，未验证 wifi 接口上使用的用户空间提供的 beacon 标头内容，这可导致堆缓冲区溢出。有权限配置 wifi 接口的本地用户可利用此问题造成拒绝服务（内存损坏或崩溃），或可能造成权限提升。

CVE-2019-17052、CVE-2019-17053、CVE-2019-17054、CVE-2019-17055、CVE-2019-17056

Ori Nimron 报告称，多种网络协议实现

  - AX.25、IEEE 802.15.4、Appletalk、ISDN 和 NFC - 允许所有用户创建原始套接字。本地用户可利用此漏洞，在使用这些协议的网络上发送任意数据包。

CVE-2019-17075

已发现 cxgb4 Infiniband 驱动程序请求对堆栈分配的缓冲区进行 DMA（直接内存访问），这在某些系统上不受支持，可导致堆栈的内存损坏。本地用户可利用此问题造成拒绝服务（内存损坏或崩溃），或可能造成权限提升。

CVE-2019-17133

Nicholas Waisman 报告称，wifi 堆栈未能在复制前验证收到的 SSID 信息，这可能会在未经驱动程序或固件验证时导致缓冲区溢出。恶意的无线接入点可能利用此漏洞，造成拒绝服务（内存损坏或崩溃），或可能招致远程代码执行。

CVE-2019-17666

Nicholas Waisman 报告称，rtlwifi wifi 驱动程序未正确验证接收到的 P2P 信息，从而导致缓冲区溢出。恶意的 P2P 对等机可利用此漏洞，造成拒绝服务（内存损坏或崩溃），或可能招致远程代码执行。

CVE-2019-18282

Jonathan Berger、Amit Klein 和 Benny Pinkas 发现，UDP/IPv6 流标签的生成使用了弱哈希函数“jhash”。
此漏洞可用于在计算机与不同远程服务器和不同网络通信时追踪各台计算机。现已使用“siphash”函数代替。

CVE-2019-18683

在用于测试 Video4Linux2 (V4L2) 应用程序的活跃媒体驱动程序中发现多个争用条件。这些争用条件可能会导致释放后使用。在已经加载此应用程序的系统上，具有媒体设备访问权限的用户可利用此错误造成拒绝服务（内存损坏或崩溃），或可能造成权限提升。

CVE-2019-18809

Navid Emamdoost 发现，如果设备无法响应命令，af9005 媒体驱动程序中可能存在内存泄漏。此漏洞的安全影响尚不明确。

CVE-2019-19037

已发现 ext4 文件系统驱动程序未正确处理其中包含漏洞（未分配区域）的目录。能够挂载任意 ext4 卷的攻击者可利用此问题造成拒绝服务（崩溃）。

CVE-2019-19051

Navid Emamdoost 发现，如果软件 rfkill 操作失败，i2400m wimax 驱动程序中可能出现内存泄漏。此漏洞的安全影响尚不明确。

CVE-2019-19052

Navid Emamdoost 发现，如果开放（接口被激活）操作失败，gs_usb CAN 驱动程序中可能出现内存泄漏。此漏洞的安全影响尚不明确。

CVE-2019-19056、CVE-2019-19057

Navid Emamdoost 发现，如果探针操作失败，mwifiex wifi 驱动程序中可能出现内存泄漏。此漏洞的安全影响尚不明确。

CVE-2019-19062

Navid Emamdoost 发现，如果 CRYPTO_MSG_GETALG 操作失败，AF_ALG 子系统中可能会出现内存泄漏。本地用户可利用此漏洞造成拒绝服务（内存耗尽）。

CVE-2019-19066

Navid Emamdoost 发现，如果 get_fc_host_stats 操作失败，bfa SCSI 驱动程序中可能出现内存泄漏。此漏洞的安全影响尚不明确。

CVE-2019-19068

Navid Emamdoost 发现，如果无法向设备提交中断缓冲区，rtl8xxxu wifi 驱动程序中可能出现内存泄漏。此漏洞的安全影响尚不明确。

CVE-2019-19227

Dan Carpenter 报告称，Appletalk 协议实现中缺少错误检查会导致空指针取消引用。此漏洞的安全影响尚不明确。

CVE-2019-19332

syzkaller 工具发现，x86 的 KVM 实现中缺少边界检查，这可导致堆缓冲区溢出。有权使用 KVM 的本地用户可利用此漏洞造成拒绝服务（内存损坏或崩溃），或可能造成权限提升。

CVE-2019-19447

已发现 ext4 文件系统驱动程序未安全处理取消链接计数为 0 的 inode 链接的操作，该漏洞是文件系统损坏所致。能够挂载任意 ext4 卷的攻击者可利用此问题造成拒绝服务（内存损坏或崩溃）或可能用于权限升级。

CVE-2019-19523

syzkaller 工具发现 adutux USB 驱动程序中存在释放后使用缺陷。能够添加和删除 USB 设备的攻击者可利用此错误造成拒绝服务（内存损坏或崩溃），或可能造成权限提升。

CVE-2019-19524

syzkaller 工具在输入驱动程序使用的 ff-memless 库中发现争用条件。能够添加和删除 USB 设备的攻击者可利用此错误造成拒绝服务（内存损坏或崩溃），或可能造成权限提升。

CVE-2019-19525

syzkaller 工具发现用于 IEEE 802.15.4 网络的 atusb 驱动程序中存在释放后使用缺陷。能够添加和删除 USB 设备的攻击者可能会利用此错误造成拒绝服务（内存损坏或崩溃），或造成权限提升。

CVE-2019-19527

syzkaller 工具发现，hiddev 驱动程序未正确处理打开设备任务与断开底层硬件之间的争用。有权访问 hiddev 设备、能够添加和删除 USB 设备的本地用户可利用此漏洞造成拒绝服务（内存损坏或崩溃），或可能造成权限提升。

CVE-2019-19530

syzkaller 工具发现 cdc-acm 网络驱动程序中可能存在释放后使用漏洞。能够添加 USB 设备的攻击者可利用此错误造成拒绝服务（内存损坏或崩溃），或可能造成权限提升。

CVE-2019-19531

syzkaller 工具发现 yurex USB 驱动程序中存在释放后使用缺陷。能够添加和删除 USB 设备的攻击者可利用此错误造成拒绝服务（内存损坏或崩溃），或可能造成权限提升。

CVE-2019-19532

syzkaller 工具发现，hid-gaff 输入驱动程序中可能存在堆缓冲区溢出，并且其他许多输入驱动程序中也存在此问题。能够添加 USB 设备的攻击者可利用此错误造成拒绝服务（内存损坏或崩溃），或可能造成权限提升。

CVE-2019-19533

syzkaller 工具发现，ttusb-dec 媒体驱动程序缺少结构初始化，这可能导致从内核内存泄漏敏感信息。

CVE-2019-19534、CVE-2019-19535、CVE-2019-19536

syzkaller 工具发现，peak_usb CAN 驱动程序缺少部分结构初始化，这可能导致从内核内存泄漏敏感信息。

CVE-2019-19537

syzkaller 工具发现，USB 堆栈中存在涉及字符设备注册的争用条件。能够添加 USB 设备的攻击者可利用此错误造成拒绝服务（内存损坏或崩溃），或可能造成权限提升。

CVE-2019-19767

syzkaller 工具发现，构建的 ext4 卷可在 ext4 文件系统驱动程序中触发缓冲区溢出。能够挂载此类卷的攻击者可利用此问题造成拒绝服务（内存损坏或崩溃），或可能造成权限提升。

CVE-2019-19947

发现 kvaser_usb CAN 驱动程序缺少部分结构初始化，这可能导致从内核内存泄漏敏感信息。

CVE-2019-19965

Gao Chuan 报告称，SCSI 主机驱动程序使用的 libsas 库中存在争用条件，这可导致空指针取消引用。能够添加和删除 SCSI 设备的攻击者可利用此问题造成拒绝服务（缺陷/错误）。

CVE-2019-20096

Hulk Robot 工具在 DCCP 协议实现中发现一个潜在内存泄漏问题。本地用户可利用此问题，如果系统使用 DCCP，远程攻击者亦可利用，以造成拒绝服务（内存不足）。

对于 Debian 8“Jessie”，已在版本 4.9.210-1~deb8u1 中修复这些问题。此更新还额外修复了 Debian 缺陷 #869511 和 945023；并且还包含了来自于稳定更新 4.9.190-4.9.210（含）的大量缺陷修复。

我们建议您升级 linux-4.9 程序包。

注意：Tenable Network Security 已直接从 DLA 安全公告中提取上述描述块。Tenable 已尝试在不引入其他问题的情况下，尽可能进行自动清理和排版。

远程 Oracle Linux 7 主机上安装的多个程序包受到 ELSA-2020-4060 公告中提及的多个漏洞影响。

  - 在 Linux 内核 4.20 之前的版本中发现问题。drivers/scsi/libsas/sas_expander.c 中的 smp_task_timedout() 和 smp_task_done() 中存在争用条件，可导致释放后使用。(CVE-2018-20836)

  - 在版本低于 4.14.15 的 Linux 内核中的 drivers/i2c/i2c-core-smbus.c 中发现问题。函数 i2c_smbus_xfer_emulated 中存在越界写入。(CVE-2017-18551)

  - 在 Linux 内核 5.3.2 及其之前版本的 AF_IEEE802154 网络模块中，net/ieee802154/socket.c 中的 ieee802154_create 未强制执行 CAP_NET_RAW，这意味着非特权用户可创建原始套接字，亦称 CID-e69dbd4619e7。(CVE-2019-17053)

  - 在 Linux 内核 5.2.3 之前的版本中发现问题。在 drivers/media/usb/zr364xx/zr364xx.c driver 驱动程序中，存在由恶意 USB 设备造成的空指针取消引用。(CVE-2019-15217)

  - 在低于 5.0 的 Linux 内核版本中，当 register_netdev() 未能注册 sitn->fb_tunnel_dev 时，net/ipv6/sit.c 中的 sit_init_net() 中存在内存泄漏，可能导致拒绝服务，亦即 CID-07f12b26e21a。(CVE-2019-16994)

  - 在 Linux 内核 5.3.2 及其之前版本的 AF_ISDN 网络模块中，drivers/isdn/mISDN/socket.c 中的 base_sock_create 未强制执行 CAP_NET_RAW，这意味着非特权用户可创建原始套接字，亦称 CID-b91ee4aa2a21。(CVE-2019-17055)

  - 在低于 5.1.13 的 Linux 内核版本中，当 SAS 扩展器发现失败时，drivers/scsi/libsas/sas_expander.c 中存在内存泄漏。此问题会导致错误和拒绝服务。(CVE-2019-15807)

  - Linux 内核 5.2.14 中的 drivers/scsi/qla2xxx/qla_os.c 未检查 alloc_workqueue 返回值，从而导致空指针取消引用。(CVE-2019-16233)

  - 在 Linux 内核 5.0.5 之前的版本中发现问题。当 hci_uart_register_dev() 失败时，drivers/bluetooth/hci_ldisc.c 中的 hci_uart_set_proto() 中存在释放后使用问题。(CVE-2019-15917)

  - 在 Linux 内核 3.13 至 5.4 版本中，发现 Linux 内核的 KVM 虚拟机监控程序处理 'KVM_GET_EMULATED_CPUID' ioctl(2) 请求以获取 KVM 虚拟机监控程序所模拟 CPUID 功能的方式中存在越界内存写入问题。能够访问“/dev/kvm”设备的用户或进程可利用此缺陷，造成系统崩溃，从而导致拒绝服务。 (CVE-2019-19332)

  - Linux 内核 5.2.14 中的 drivers/net/fjes/fjes_main.c 未检查 alloc_workqueue 返回值，从而导致空指针取消引用。(CVE-2019-16231)

  - 在 Linux 内核 5.0.6 之前版本中，fs/proc/proc_sysctl.c 的 drop_sysctl_table() 中存在空指针取消引用，与 put_links 有关，亦称 CID-23da9588037e。(CVE-2019-20054)

  - 在低于 5.1.6 的 Linux 内核版本中，drivers/net/wireless/marvell/mwifiex/cfg80211.c 中的 mwifiex_tm_cmd 中存在某些错误处理情况，不能释放已分配的 hostcmd 内存，亦即 CID-003b686ace82。此问题将导致内存泄漏和拒绝服务。(CVE-2019-20095)

  - 启用嵌套虚拟化时，在 KVM 管理程序处理 L2 客户机指令仿真的方式中发现缺陷。在某些情况下，L2 客户机可能诱骗 L0 客户机访问敏感 L1 资源，而 L2 客户机本身无法访问该资源。(CVE-2020-2732)

  - 在低于 5.5.8 的 Linux 内核版本中，drivers/vhost/net.c 中的 get_raw_socket 缺少 sk_family 字段验证，攻击者可能利用此漏洞，通过 构建的系统调用，触发内核堆栈损坏。
    (CVE-2020-10942)

  - 在 Linux 内核 3.16 至 5.5.6 版本中发现一个问题。drivers/block/floppy.c 中的 set_fdc 会导致 wait_til_ready 越界读取，这是因为在分配 FDC 索引前未检查其是否存在错误，也称为 CID-2e90ca68b0d2。(CVE-2020-9383)

  - 在 Linux 内核 5.3.7 之前的版本中，drivers/usb/misc/adutux.c 驱动程序中存在由恶意 USB 设备造成的释放后使用错误，又称为 CID-44efc269db79。(CVE-2019-19523)

  - 在 Linux 内核 5.5.2 及之前版本中，drivers/tty/vt/vt.c 的 vc_do_resize 函数存在释放后使用漏洞。(CVE-2020-8647)

  - 在 Linux 内核 5.5.2 及之前版本中，drivers/video/console/vgacon.c 的 vgacon_invert_region 函数存在释放后使用漏洞。(CVE-2020-8649)

  - 在 Linux 内核 5.3.12 之前的版本中，drivers/input/ff-memless.c 驱动程序中存在恶意 USB 设备造成的释放后使用错误（又称为 CID-fa3a5a1880c9）。(CVE-2019-19524)

  - 在 Linux 内核 5.2.10 之前的版本中，USB 字符设备驱动程序层中存在恶意 USB 设备造成的争用条件错误（又称为 CID-303911cfc5b9）。此漏洞会影响 drivers/usb/core/file.c。(CVE-2019-19537)

  - 在 Linux 内核 5.4.12 之前的版本中，drivers/input/input.c 存在通过构建的 keycode 表造成的越界写入漏洞，input_set_keycode 即为一例（又称为 CID-cb222aed03d7）。(CVE-2019-20636)

  - 在 Linux 内核 5.3.11 之前版本中，drivers/net/can/usb/peak_usb/pcan_usb_core.c 驱动程序中存在恶意 USB 设备，会造成信息泄漏缺陷，亦称 CID-f7a1337f0d29。(CVE-2019-19534)

  - 在 Linux 内核中，IPsec 内的某些网络协议（例如，IPv6 上的 VXLAN 和 GENEVE 隧道）的实现中发现缺陷。在两台主机之间创建加密隧道时，内核未通过加密链接正确地路由隧道数据；而是未经加密即发送数据。这将允许两个端点之间的任何人读取未加密的流量。此漏洞主要威胁数据机密性。(CVE-2020-1749)

  - 版本低于 5.4.2 的 Linux 内核未正确处理 ext4_expand_extra_isize，__ext4_expand_extra_isize 和 ext4_xattr_set_entry 中的释放后使用错误即为一例，此问题与 fs/ext4/inode.c 和 fs/ext4/super.c 相关，亦即 CID-4ea99936a163。(CVE-2019-19767)

  - 在 Linux 内核 5.3.11 及之前版本中，drivers/net/wireless/intel/iwlwifi/fw/dbg.c 中的 alloc_sgtable() 函数中存在内存泄漏，攻击者可利用此漏洞，通过触发 alloc_page() 失败，造成拒绝服务（内存消耗），亦即 CID-b4b814fec1a5。(CVE-2019-19058)

  - 在低于 5.5 的内核版本中存在释放后使用，这是资源取消分配时 ptp_clock 和 cdev 的发布之间存在争用条件所致。当（高权限）进程分配 ptp 设备文件（如 /dev/ptpX）时，漏洞会休眠。在此期间，如果删除底层设备，在进程唤醒以终止并清除所有附加文件时，此漏洞可导致可利用的情况。
    系统崩溃，这是 inode 所指向的 cdev 结构无效（因已释放）所致。(CVE-2020-10690)

  - 在 Linux 内核 5.6.11 及之前版本中发现一个问题。在特定故障情况下，sg_write 缺少 sg_remove_request 调用（又称为 CID-83c6f2390040）。(CVE-2020-12770)

  - 在 5.3.11之前的 Linux 内核中，sound/core/timer.c 存在由错误代码重构造成的释放后使用漏洞，也称为 CID-e7af6307a8a5。这与 snd_timer_open 和 snd_timer_close_locked 有关。timeri 变量最初用于新创建的定时器实例，但在重构后用于不同的目的。 (CVE-2019-19807)

  - 在 Linux 内核 5.3.11 及之前的版本中，crypto/crypto_user_base.c 的 crypto_report() 函数中存在内存泄露漏洞，使攻击者能够通过触发 crypto_report_alg() 失败造成拒绝服务（内存消耗），也称为 CID-ffdde5932042。(CVE-2019-19062)

  - 在 Linux 内核的用户空间核心转储实现中发现缺陷。此缺陷使具有本地帐户的攻击者能够造成小程序崩溃并泄露专用内核数据。
    (CVE-2020-10732)

  - 在 Linux 内核 5.0.21 中，挂载构建的 ext4 文件系统图像、执行某些操作及卸载可在 fs/ext4/super.c 的 ext4_put_super 中导致释放后使用，此漏洞与 fs/ext4/super.c 中的 dump_orphan_list 有关。(CVE-2019-19447)

  - 在版本低于 5.7 的 Linux 内核 SELinux LSM 挂钩实现中发现一个缺陷，其中该缺陷错误地假设 skb 只会包含一个 netlink 消息。挂钩会错误地仅验证 skb 中的第一个 netlink 消息，并在不进一步处理的情况下，使用授予的权限允许或拒绝 skb 内的其余消息。(CVE-2020-10751)

  - 在 Linux 内核 5.3.11 及之前版本中，drivers/net/wireless/realtek/rtlwifi/usb.c 中的 rtl_usb_probe() 函数中存在两项内存泄漏，攻击者可利用此漏洞，造成拒绝服务（内存消耗），亦即 CID-3f9361695113。(CVE-2019-19063)

  - 在 5.3.9 及之前版本的 Linux 内核中，drivers/crypto/ccp/ccp-ops.c 的 ccp_run_sha_cmd() 函数中存在内存泄漏，攻击者可利用此漏洞造成拒绝服务（内存消耗），即 CID-128c66429247。
    (CVE-2019-18808)

  - **存在争议** 在 Linux 内核 5.3.11 及之前版本中，drivers/char/ipmi/ipmi_msghandler.c 的 __ipmi_bmc_register() 函数中存在内存泄漏，攻击者可利用此漏洞，通过触发 ida_simple_get() 失败，造成拒绝服务（内存消耗）（又称为 CID-4aa7afb0ee20）。注意：第三方对此问题的相关性存在争议，因为攻击者无法在探测时实际控制此故障。(CVE-2019-19046)

  - 在 Linux 内核 5.3.11 及之前所有版本中，drivers/net/wireless/intel/iwlwifi/pcie/ctxt-info-gen3.c 中的 iwl_pcie_ctxt_info_gen3_init() 函数存在多个内存泄漏漏洞，攻击者可通过触发 iwl_pcie_init_fw_sec() 或 dma_alloc_coherent() 失败造成拒绝服务（内存消耗），也称为 CID-0f4f199443fa。(CVE-2019-19059)

  - 5.2.10 之前的 Linux 内核中存在一个使用后释放缺陷，该缺陷可能是由 drivers/usb/class/cdc-acm.c 驱动程序 aka CID-c52873e5a1ef 中的恶意 USB 设备所致。(CVE-2019-19530)

  - Linux 内核中发现缺陷。Direct IO 写入期间存在索引缓冲区溢出漏洞，可导致 NFS 客户端崩溃。在某些情况下，通过 kmalloc 分配一个内存后超出索引范围将导致内核错误。此漏洞对机密性和系统可用性威胁最大。(CVE-2020-10742)

  - 在 i2c 驱动程序的 Android 内核中，由于内存损坏，可能存在越界写入漏洞。这可能会导致本地权限提升，并需要系统执行权限。无需用户交互即可利用漏洞。(CVE-2019-9454)

  - 在 Android 内核的视频驱动程序中存在释放后使用漏洞，这是争用条件所致。这可能会导致本地权限提升，且无需其他执行权限。无需用户交互即可利用漏洞。(CVE-2019-9458)

  - 在 Linux 内核 5.1.6 及之前的所有版本中，在 arch/powerpc/platforms/pseries/dlpar.c 的 dlpar_parse_cc_property 中发现一个问题。prop->name 中存在未经检查的 kstrdup，攻击者可借此造成拒绝服务（空指针取消引用和系统崩溃）。(CVE-2019-12614)

  - ** 争议 **  在 Linux 内核 5.3.11 及其之前版本中， net/wireless/nl80211.c 的 nl80211_get_ftm_responder_stats() 函数中存在内存泄漏，允许攻击者通过触发 nl80211hdr_put() 失败造成拒绝服务（内存消耗），亦称 CID-1399c59fa929。注意：第三方对此问题的相关性存在争议，因为它发生在已成功分配的代码路径中。(CVE-2019-19055)

  - **存在争议** 在 Linux 内核 5.6.2 及之前版本中发现一个问题。mm/mempolicy.c 的 mpol_parse_str 中存在基于堆栈的越界写入，这是解析挂载选项期间未正确处理空节点列表所致（又称为 CID-aa9f7d5172fa）。注意：安全社区中的某些人不同意此漏洞判定结果，因为此问题是解析挂载选项时的一个错误，只能由特权用户进行指定，因此触发该错误不会授予任何尚未拥有的权限。(CVE-2020-11565)

  - 在 Linux 内核 5.6.5 之前版本中发现信号访问控制问题，也称为 CID-7395ea4e65c2。
    由于 include/linux/sched.h 中的 exec_id 仅为 32 位整型变量，因此整数溢出可干扰 do_notify_parent 保护机制。子进程可向另一个安全域中的父进程发送任意信号。利用限制包括在发生整数溢出之前经过的时间量，以及缺少向父进程发送信号会产生重大操作威胁的情况。(CVE-2020-12826)

  - 在 Linux 内核 IP 语音 H.323 连接跟踪功能处理 ipv6 端口 1720 上的连接的方式中发现越界内存写入缺陷。此缺陷允许未经身份验证的远程用户造成系统崩溃，从而导致拒绝服务。此漏洞最大的威胁在于机密性、完整性，以及系统可用性。(CVE-2020-14305)

请注意，Nessus 尚未测试这些问题，而是只依据应用程序自我报告的版本号进行判断。

远程 Oracle Linux 7 主机上安装的程序包受到 ELSA-2020-5715 公告中提及的多个漏洞的影响。

  - 版本低于 5.0.10 的 Linux 内核中的 coredump 实现不会使用锁定或其他机制在其运行时防止 vma 布局或 vma 标志变更，本地用户可借此触发含有 mmget_not_zero 或 get_task_mm 调用的争用条件，从而获得敏感信息、造成拒绝服务或可能产生其他不明影响。此问题与 fs/userfaultfd.c、mm/mmap.c、fs/proc/task_mmu.c 和 drivers/infiniband/core/uverbs_main.c 有关。(CVE-2019-11599)

  - 在提交 1b5e2423164b3670e8bc9174e4762d297990deff 之前的 Broadcom brcmfmac WiFi 驱动程序容易受到堆缓冲区溢出的影响。如果已配置 Wake-up on Wireless LAN 功能，攻击者可通过构建恶意事件框架来触发 brcmf_wowl_nd_results 函数中的堆缓冲区溢出。攻击者可使用已破坏的芯片组来利用此漏洞破坏主机，也可将此漏洞与 CVE-2019-9503 结合，从而远程利用此漏洞。在最坏的情况下，通过发送特别构建的 WiFi 数据包，未经身份验证的远程攻击者可能可以在有漏洞的系统上执行任意代码。更典型的是，此漏洞会造成拒绝服务情况。
    (CVE-2019-9500)

  - 在提交 a4176ec356c73a46c07c181c6d04039fafa34a9f 之前的 Broadcom brcmfmac WiFi 驱动程序容易受到框架验证绕过的影响。如果 brcmfmac 驱动程序从远程源收到固件事件框架，is_wlc_event_frame 函数将导致该框架被丢弃和未处理。如果驱动程序从主机接收到固件事件框架，则会调用相应的处理程序。如果使用的总线是 USB（例如通过 wifi 加密狗），则可绕过此框架验证。这样就可以允许处理来自远程源的固件事件框架。在最坏的情况下，通过发送特别构建的 WiFi 数据包，未经身份验证的远程攻击者可能可以在有漏洞的系统上执行任意代码。
    更典型的是，此漏洞会导致拒绝服务情况。(CVE-2019-9503)

  - 在 Linux 内核 5.3.11 及之前版本中，drivers/net/wireless/marvell/mwifiex/pcie.c 中的 mwifiex_pcie_alloc_cmdrsp_buf() 函数中存在内存泄漏，攻击者可利用此漏洞，通过触发 mwifiex_map_pci_memory() 失败，造成拒绝服务（内存消耗），亦即 CID-db8fd2cde932。(CVE-2019-19056)

  - 在版本低于 5.6.1 的 Linux 内核中的 stv06xx 子系统中发现问题。
    drivers/media/usb/gspca/stv06xx/stv06xx.c 和 drivers/media/usb/gspca/stv06xx/stv06xx_pb0100.c 未正确处理无效描述符，空指针取消引用即为一例，亦即 CID-485b06aadb93。(CVE-2020-11609)

  - 在 Linux 内核 5.6.1 之前的版本中，drivers/media/usb/gspca/xirlink_cit.c（又称为 Xirlink 摄像头 USB 驱动程序）未正确处理无效描述符（又称为 CID-a246b4d54770）。(CVE-2020-11668)

  - 在版本为 2.6.32 的 Linux 内核中的 Marvell WiFi 芯片驱动程序中，发现基于堆栈的缓冲区溢出。当 STA 在 IBSS 模式下工作（在不使用 AP 的情况下将工作站连接在一起）并连接到另一个 STA 时，攻击者可造成拒绝服务（系统崩溃），或可能执行任意代码。(CVE-2019-14897)

  - 在 Linux 内核 5.3.12 之前的版本中，drivers/input/ff-memless.c 驱动程序中存在恶意 USB 设备造成的释放后使用错误（又称为 CID-fa3a5a1880c9）。(CVE-2019-19524)

  - 在 Linux 内核 5.2.10 之前的版本中，USB 字符设备驱动程序层中存在恶意 USB 设备造成的争用条件错误（又称为 CID-303911cfc5b9）。此漏洞会影响 drivers/usb/core/file.c。(CVE-2019-19537)

  - 在 Linux 内核 5.4.12 之前的版本中，drivers/input/input.c 存在通过构建的 keycode 表造成的越界写入漏洞，input_set_keycode 即为一例（又称为 CID-cb222aed03d7）。(CVE-2019-20636)

  - 在 Linux 内核 5.0 之前的版本中发现问题。drivers/net/phy/mdio_bus.c 中的 __mdiobus_register() 函数可调用 put_device()，进而触发 fixed_mdio_bus_init 释放后使用。
    此问题会导致拒绝服务。(CVE-2019-12819)

  - 在 Linux 内核 5.3.11 及之前版本中，drivers/net/wireless/marvell/mwifiex/pcie.c 中的 mwifiex_pcie_init_evt_ring() 函数中存在两项内存泄漏，攻击者可利用此漏洞，通过触发 mwifiex_map_pci_memory() 失败，造成拒绝服务（内存消耗），亦即 CID-d10dcb615c8e。(CVE-2019-19057)

  - 在版本为 2.6.32 的 Linux 内核中的 Marvell WiFi 芯片驱动程序中，发现基于堆的缓冲区溢出漏洞。在 STA 连接到 AP 后调用 lbs_ibss_join_existing 函数时，远程攻击者可造成拒绝服务（系统崩溃），或可能执行任意代码。
    (CVE-2019-14896)

  - Linux 内核 5.2.9 及其之前版本的 drivers/media/usb/dvb-usb/technisat-usb2.c 中，通过构建的 USB 设备流量（可能通过 usbip 或 usbredir 以远程方式造成）存在越界读取。(CVE-2019-15505)

  - 在 Linux 内核 5.3.10 之前的 4.3 至 5.x 版本中，flow_dissector 功能存在设备跟踪漏洞，亦称 CID-55667441c84f。这是 UDP IPv6 程序包的自动流标签依赖于 32 位 hashrnd 值作为密码且使用 jhash（而非 siphash）所致。hashrnd 值从启动时即保持不变，且攻击者可进行推断。这会影响 net/core/flow_dissector.c 及相关代码。(CVE-2019-18282)

  - 版本低于 5.4.2 的 Linux 内核未正确处理 ext4_expand_extra_isize，__ext4_expand_extra_isize 和 ext4_xattr_set_entry 中的释放后使用错误即为一例，此问题与 fs/ext4/inode.c 和 fs/ext4/super.c 相关，亦即 CID-4ea99936a163。(CVE-2019-19767)

  在某些 Intel(R) 处理器中，来自特定的特殊寄存器读取操作的不完整清理可能会允许经过身份验证的用户通过本地访问实现信息泄露。(CVE-2020-0543)

  - **存在争议** 在版本低于 5.6 的 Linux 内核中发现一个问题。arch/x86/kvm/svm.c 中的 svm_cpu_uninit 中存在内存泄漏，亦即 CID-d80b64ff297e。注意：第三方对此问题存在争议，因为这是启动时一次性泄漏，大小可忽略，并且无法任意触发。
    (CVE-2020-12768)

  - 在 Linux 内核 5.3.11 之前版本中，drivers/net/ethernet/mellanox/mlx5/core/fpga/conn.c 的 mlx5_fpga_conn_create_cq() 函数中存在内存泄漏，允许攻击者通过触发mlx5_vector2eqn() 失败造成拒绝服务（内存消耗），亦称 CID-c8c2a057fdc7。(CVE-2019-19045)

  - 在 Linux 内核 5.3.11 及之前版本中，drivers/net/wireless/intel/iwlwifi/fw/dbg.c 中的 alloc_sgtable() 函数中存在内存泄漏，攻击者可利用此漏洞，通过触发 alloc_page() 失败，造成拒绝服务（内存消耗），亦即 CID-b4b814fec1a5。(CVE-2019-19058)

请注意，Nessus 尚未测试此问题，而是只依靠应用程序自我报告的版本号来判断。

安全修复：

  - 内核：sound/core/timer.c 中的释放后使用 (CVE-2019-19807)

  - 内核：drivers/i2c/i2c-core-smbus.c 的 i2c_smbus_xfer_emulated 函数中的越界写入 (CVE-2017-18551)

  - 内核：drivers/scsi/libsas/sas_expander.c 中 smp_task_timedout() 和 smp_task_done() 存在争用条件，可导致释放后使用 (CVE-2018-20836)

  - 内核：i2c 驱动程序的越界写入导致本地权限提升 (CVE-2019-9454)

  - 内核：由于视频驱动程序中的争用条件而导致的释放后使用会造成本地权限升级 (CVE-2019-9458)

ID	名稱	產品	系列	已發布	已更新	嚴重性
137516	EulerOS 2.0 SP2 : kernel (EulerOS-SA-2020-1674)	Nessus	Huawei Local Security Checks	2020/6/17	2023/4/25	critical
132394	SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2019:3381-1)	Nessus	SuSE Local Security Checks	2019/12/24	2024/4/2	critical
134559	openSUSE Security Update : the Linux Kernel (openSUSE-2020-336)	Nessus	SuSE Local Security Checks	2020/3/13	2024/3/22	critical
141619	CentOS 7 : kernel (CESA-2020:4060)	Nessus	CentOS Local Security Checks	2020/10/20	2024/2/15	high
132236	SUSE SLES12 Security Update : kernel (SUSE-SU-2019:3316-1)	Nessus	SuSE Local Security Checks	2019/12/18	2024/4/3	critical
132390	SUSE SLES12 Security Update : kernel (SUSE-SU-2019:3379-1)	Nessus	SuSE Local Security Checks	2019/12/23	2024/4/2	critical
142382	RHEL 8 : kernel-rt (RHSA-2020:4609)	Nessus	Red Hat Local Security Checks	2020/11/4	2024/4/28	high
132925	SUSE SLES12 Security Update : kernel (SUSE-SU-2020:0093-1)	Nessus	SuSE Local Security Checks	2020/1/15	2024/3/29	critical
133101	Debian DLA-2068-1：linux 安全更新	Nessus	Debian Local Security Checks	2020/1/21	2024/3/29	critical
134240	Debian DLA-2114-1：linux-4.9 安全更新	Nessus	Debian Local Security Checks	2020/3/6	2024/3/25	critical
180975	Oracle Linux 7：内核 (ELSA-2020-4060)	Nessus	Oracle Linux Local Security Checks	2023/9/7	2023/9/7	high
137291	Oracle Linux 7：Unbreakable Enterprise 内核 (ELSA-2020-5715)	Nessus	Oracle Linux Local Security Checks	2020/6/10	2022/1/26	critical
164556	Nutanix AOS：多个漏洞 (NXSA-AOS-5.19.0.5)	Nessus	Misc.	2022/9/1	2024/3/8	critical
141727	Scientific Linux 安全更新：SL7.x x86_64 上的内核 (20201001)	Nessus	Scientific Linux Local Security Checks	2020/10/21	2024/2/14	high
164599	Nutanix AOS：多个漏洞 (NXSA-AOS-5.15.5)	Nessus	Misc.	2022/9/1	2024/4/8	critical

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