The SUSE Linux Enterprise 12 SP3 kernel was updated to receive various security and bug fixes.

The following security bugs were fixed :

CVE-2020-25705: A flaw in the way reply ICMP packets are limited in was found that allowed to quickly scan open UDP ports. This flaw allowed an off-path remote user to effectively bypassing source port UDP randomization. The highest threat from this vulnerability is to confidentiality and possibly integrity, because software and services that rely on UDP source port randomization (like DNS) are indirectly affected as well. Kernel versions may be vulnerable to this issue (bsc#1175721, bsc#1178782).

CVE-2020-25668: Fixed a use-after-free in con_font_op() (bsc#1178123).

CVE-2020-25656: Fixed a concurrency use-after-free in vt_do_kdgkb_ioctl (bnc#1177766).

CVE-2020-14351: Fixed a race in the perf_mmap_close() function (bsc#1177086).

CVE-2020-8694: Restricted energy meter to root access (bsc#1170415).

CVE-2020-12352: Fixed an information leak when processing certain AMP packets aka 'BleedingTooth' (bsc#1177725).

CVE-2020-25645: Fixed an issue which traffic between two Geneve endpoints may be unencrypted when IPsec is configured to encrypt traffic for the specific UDP port used by the GENEVE tunnel allowing anyone between the two endpoints to read the traffic unencrypted (bsc#1177511).

CVE-2020-14381: Fixed a use-after-free in the fast user mutex (futex) wait operation, which could have lead to memory corruption and possibly privilege escalation (bsc#1176011).

CVE-2020-25212: Fixed A TOCTOU mismatch in the NFS client code which could have been used by local attackers to corrupt memory (bsc#1176381).

CVE-2020-14390: Fixed an out-of-bounds memory write leading to memory corruption or a denial of service when changing screen size (bnc#1176235).

CVE-2020-25643: Fixed a memory corruption and a read overflow which could have caused by improper input validation in the ppp_cp_parse_cr function (bsc#1177206).

CVE-2020-25641: Fixed a zero-length biovec request issued by the block subsystem could have caused the kernel to enter an infinite loop, causing a denial of service (bsc#1177121).

CVE-2020-26088: Fixed an improper CAP_NET_RAW check in NFC socket creation could have been used by local attackers to create raw sockets, bypassing security mechanisms (bsc#1176990).

CVE-2020-0432: Fixed an out of bounds write due to an integer overflow (bsc#1176721).

CVE-2020-0431: Fixed an out of bounds write due to a missing bounds check (bsc#1176722).

CVE-2020-0427: Fixed an out of bounds read due to a use after free (bsc#1176725).

CVE-2020-0404: Fixed a linked list corruption due to an unusual root cause (bsc#1176423).

CVE-2020-25284: Fixed an incomplete permission checking for access to rbd devices, which could have been leveraged by local attackers to map or unmap rbd block devices (bsc#1176482).

CVE-2019-19063: Fixed two memory leaks in the rtl_usb_probe() function in drivers/net/wireless/realtek/rtlwifi/usb.c, which could have allowed an attacker to cause a denial of service (memory consumption) (bsc#1157298).

CVE-2019-6133: In PolicyKit (aka polkit), the 'start time' protection mechanism can be bypassed because fork() is not atomic, and therefore authorization decisions are improperly cached. This is related to lack of uid checking in polkitbackend/polkitbackendinteractiveauthority.c (bsc#1121872).

CVE-2017-18204: Fixed a denial of service in the ocfs2_setattr function of fs/ocfs2/file.c (bnc#1083244).

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 SP5 Azure kernel was updated to receive various security and bugfixes.

The following security bugs were fixed :

CVE-2020-26088: Fixed an improper CAP_NET_RAW check in NFC socket creation could have been used by local attackers to create raw sockets, bypassing security mechanisms (bsc#1176990).

CVE-2020-14390: Fixed an out-of-bounds memory write leading to memory corruption or a denial of service when changing screen size (bnc#1176235).

CVE-2020-0432: Fixed an out of bounds write due to an integer overflow (bsc#1176721).

CVE-2020-0427: Fixed an out of bounds read due to a use after free (bsc#1176725).

CVE-2020-0431: Fixed an out of bounds write due to a missing bounds check (bsc#1176722).

CVE-2020-0404: Fixed a linked list corruption due to an unusual root cause (bsc#1176423).

CVE-2020-25212: Fixed getxattr kernel panic and memory overflow (bsc#1176381).

CVE-2020-25284: Fixed an incomplete permission checking for access to rbd devices, which could have been leveraged by local attackers to map or unmap rbd block devices (bsc#1176482).

CVE-2020-14381: Fixed requeue paths such that filp was valid when dropping the references (bsc#1176011).

CVE-2019-25643: Fixed an improper input validation in ppp_cp_parse_cr function which could have led to memory corruption and read overflow (bsc#1177206).

CVE-2020-25641: Fixed ann issue where length bvec was causing softlockups (bsc#1177121).

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.

According to the versions of the kernel packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - In drivers/target/target_core_xcopy.c in the Linux     kernel before 5.10.7, insufficient identifier checking     in the LIO SCSI target code can be used by remote     attackers to read or write files via directory     traversal in an XCOPY request, aka CID-2896c93811e3.
    For example, an attack can occur over a network if the     attacker has access to one iSCSI LUN. The attacker     gains control over file access because I/O operations     are proxied via an attacker-selected     backstore.(CVE-2020-28374)

  - In create_pinctrl of core.c, there is a possible out of     bounds read due to a use after free. This could lead to     local information disclosure with no additional     execution privileges needed. User interaction is not     needed for exploitation.(CVE-2020-0427)

  - mwifiex_cmd_802_11_ad_hoc_start in     drivers/net/wireless/marvell/mwifiex/join.c in the     Linux kernel through 5.10.4 might allow remote     attackers to execute arbitrary code via a long SSID     value, aka CID-5c455c5ab332.(CVE-2020-36158)

  - A locking issue was discovered in the tty subsystem of     the Linux kernel through 5.9.13.
    drivers/tty/tty_jobctrl.c allows a use-after-free     attack against TIOCSPGRP, aka     CID-54ffccbf053b.(CVE-2020-29661)

  - A locking inconsistency issue was discovered in the tty     subsystem of the Linux kernel through 5.9.13.
    drivers/tty/tty_io.c and drivers/tty/tty_jobctrl.c may     allow a read-after-free attack against TIOCGSID, aka     CID-c8bcd9c5be24.(CVE-2020-29660)

  - An issue was discovered in     drivers/accessibility/speakup/spk_ttyio.c in the Linux     kernel through 5.9.9. Local attackers on systems with     the speakup driver could cause a local denial of     service attack, aka CID-d41227544427. This occurs     because of an invalid free when the line discipline is     used more than once.(CVE-2020-28941)

  - NULL-ptr deref in the spk_ttyio_receive_buf2() function     in spk_ttyio.c.(CVE-2020-27830)

  - In various methods of hid-multitouch.c, there is a     possible out of bounds write due to a missing bounds     check. This could lead to local escalation of privilege     with no additional execution privileges needed. User     interaction is not needed for     exploitation.(CVE-2020-0465)

  - A flaw was found in the Linux kernels implementation of     MIDI, where an attacker with a local account and the     permissions to issue an ioctl commands to midi devices,     could trigger a use-after-free. A write to this     specific memory while freed and before use could cause     the flow of execution to change and possibly allow for     memory corruption or privilege     escalation.(CVE-2020-27786)

  - In the nl80211_policy policy of nl80211.c, there is a     possible out of bounds read due to a missing bounds     check. This could lead to local information disclosure     with System execution privileges needed. User     interaction is not required for     exploitation.(CVE-2020-27068)

  - A locking issue was discovered in the tty subsystem of     the Linux kernel through 5.9.13.
    drivers/tty/tty_jobctrl.c allows a use-after-free     attack against TIOCSPGRP, aka     CID-54ffccbf053b.(CVE-2020-29661)

  - Array index out of bounds access when setting extended     attributes on journaling filesystems.(CVE-2020-27815)

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

According to the versions of the kernel packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - In do_epoll_ctl and ep_loop_check_proc of eventpoll.c,     there is a possible use after free due to a logic     error. This could lead to local escalation of privilege     with no additional execution privileges needed. User     interaction is not needed for     exploitation.(CVE-2020-0466)

  - fs/nfsd/nfs3xdr.c in the Linux kernel through 5.10.8,     when there is an NFS export of a subdirectory of a     filesystem, allows remote attackers to traverse to     other parts of the filesystem via READDIRPLUS. NOTE:
    some parties argue that such a subdirectory export is     not intended to prevent this attack see also the     exports(5) no_subtree_check default     behavior.(CVE-2021-3178)

  - An issue was discovered in the Linux kernel through     5.11.3. A kernel pointer leak can be used to determine     the address of the iscsi_transport structure. When an     iSCSI transport is registered with the iSCSI subsystem,     the transport's handle is available to unprivileged     users via the sysfs file system, at     /sys/class/iscsi_transport/$TRANSPORT_NAME/handle. When     read, the show_transport_handle function (in     drivers/scsi/scsi_transport_iscsi.c) is called, which     leaks the handle. This handle is actually the pointer     to an iscsi_transport struct in the kernel module's     global variables.(CVE-2021-27363)

  - An issue was discovered in the Linux kernel through     5.11.3. drivers/scsi/scsi_transport_iscsi.c is     adversely affected by the ability of an unprivileged     user to craft Netlink messages.(CVE-2021-27364)

  - A race condition was found in the Linux kernels     implementation of the floppy disk drive controller     driver software. The impact of this issue is lessened     by the fact that the default permissions on the floppy     device (/dev/fd0) are restricted to root. If the     permissions on the device have changed the impact     changes greatly. In the default configuration root (or     equivalent) permissions are required to attack this     flaw.(CVE-2021-20261)

  - In fs/ocfs2/cluster/nodemanager.c in the Linux kernel     before 4.15, local users can cause a denial of service     (NULL pointer dereference and BUG) because a required     mutex is not used.(CVE-2017-18216)

  - The omninet_open function in     drivers/usb/serial/omninet.c in the Linux kernel before     4.10.4 allows local users to cause a denial of service     (tty exhaustion) by leveraging reference count     mishandling.(CVE-2017-8925)

  - A flaw was found in the way memory resources were freed     in the unix_stream_recvmsg function in the Linux kernel     when a signal was pending. This flaw allows an     unprivileged local user to crash the system by     exhausting available memory. The highest threat from     this vulnerability is to system     availability.(CVE-2021-20265)

  - A flaw was found in the JFS filesystem code in the     Linux Kernel which allows a local attacker with the     ability to set extended attributes to panic the system,     causing memory corruption or escalating privileges. The     highest threat from this vulnerability is to     confidentiality, integrity, as well as system     availability.(CVE-2020-27815)

  - An out-of-bounds (OOB) memory access flaw was found in     x25_bind in net/x25/af_x25.c in the Linux kernel     version v5.12-rc5. A bounds check failure allows a     local attacker with a user account on the system to     gain access to out-of-bounds memory, leading to a     system crash or a leak of internal kernel information.
    The highest threat from this vulnerability is to     confidentiality, integrity, as well as system     availability.(CVE-2020-35519)

  - There is a flaw reported in the Linux kernel in     versions before 5.9 in     drivers/gpu/drm/nouveau/nouveau_sgdma.c in     nouveau_sgdma_create_ttm in Nouveau DRM subsystem. The     issue results from the lack of validating the existence     of an object prior to performing operations on the     object. An attacker with a local account with a root     privilege, can leverage this vulnerability to escalate     privileges and execute code in the context of the     kernel.(CVE-2021-20292)

  - In drivers/pci/hotplug/rpadlpar_sysfs.c in the Linux     kernel through 5.11.8, the RPA PCI Hotplug driver has a     user-tolerable buffer overflow when writing a new     device name to the driver from userspace, allowing     userspace to write data to the kernel stack frame     directly. This occurs because add_slot_store and     remove_slot_store mishandle drc_name '\0' termination,     aka CID-cc7a0bb058b8.(CVE-2021-28972)

  - A race condition was discovered in get_old_root in     fs/btrfs/ctree.c in the Linux kernel through 5.11.8. It     allows attackers to cause a denial of service (BUG)     because of a lack of locking on an extent buffer before     a cloning operation, aka     CID-dbcc7d57bffc.(CVE-2021-28964)

  - An issue was discovered in the Linux kernel before     5.11.7. usbip_sockfd_store in     drivers/usb/usbip/stub_dev.c allows attackers to cause     a denial of service (GPF) because the stub-up sequence     has race conditions during an update of the local and     shared status, aka CID-9380afd6df70.(CVE-2021-29265)

  - BPF JIT compilers in the Linux kernel through 5.11.12     have incorrect computation of branch displacements,     allowing them to execute arbitrary code within the     kernel context. This affects     arch/x86/net/bpf_jit_comp.c and     arch/x86/net/bpf_jit_comp32.c.(CVE-2021-29154)

  - The KVM implementation in the Linux kernel through     4.14.7 allows attackers to obtain potentially sensitive     information from kernel memory, aka a write_mmio     stack-based out-of-bounds read, related to     arch/x86/kvm/x86.c and     include/trace/events/kvm.h.(CVE-2017-17741)

  - An issue was discovered in the Linux kernel before     5.11.3 when a webcam device exists. video_usercopy in     drivers/media/v4l2-core/v4l2-ioctl.c has a memory leak     for large arguments, aka     CID-fb18802a338b.(CVE-2021-30002)

  - An issue was discovered in the Linux kernel through     4.17.10. There is an invalid pointer dereference in
    __del_reloc_root() in fs/btrfs/relocation.c when     mounting a crafted btrfs image, related to removing     reloc rb_trees when reloc control has not been     initialized.(CVE-2018-14609)

  - An issue was discovered in     fs/xfs/libxfs/xfs_inode_buf.c in the Linux kernel     through 4.17.3. A denial of service (memory corruption     and BUG) can occur for a corrupted xfs image upon     encountering an inode that is in extent format, but has     more extents than fit in the inode     fork.(CVE-2018-13095)

  - The vmw_gb_surface_define_ioctl function in     drivers/gpu/drm/vmwgfx/vmwgfx_surface.c in the Linux     kernel through 4.10.7 does not validate certain levels     data, which allows local users to cause a denial of     service (system hang) via a crafted ioctl call for a     /dev/dri/renderD* device.(CVE-2017-7346)

  - The klsi_105_get_line_state function in     drivers/usb/serial/kl5kusb105.c in the Linux kernel     before 4.9.5 places uninitialized heap-memory contents     into a log entry upon a failure to read the line     status, which allows local users to obtain sensitive     information by reading the log.(CVE-2017-5549)

  - An integer overflow in the uvesafb_setcmap function in     drivers/video/fbdev/uvesafb.c in the Linux kernel     before 4.17.4 could result in local attackers being     able to crash the kernel or potentially elevate     privileges because kmalloc_array is not     used.(CVE-2018-13406)

  - In the Linux kernel before version 4.12, Kerberos 5     tickets decoded when using the RXRPC keys incorrectly     assumes the size of a field. This could lead to the     size-remaining variable wrapping and the data pointer     going over the end of the buffer. This could possibly     lead to memory corruption and possible privilege     escalation.(CVE-2017-7482)

  - drivers/net/usb/rtl8150.c in the Linux kernel 4.9.x     before 4.9.11 interacts incorrectly with the     CONFIG_VMAP_STACK option, which allows local users to     cause a denial of service (system crash or memory     corruption) or possibly have unspecified other impact     by leveraging use of more than one virtual page for a     DMA scatterlist.(CVE-2017-8069)

  - An issue was discovered in the Linux kernel through     5.11.3. Certain iSCSI data structures do not have     appropriate length constraints or checks, and can     exceed the PAGE_SIZE value. An unprivileged user can     send a Netlink message that is associated with iSCSI,     and has a length up to the maximum length of a Netlink     message.(CVE-2021-27365)

  - A flaw was found in the Nosy driver in the Linux     kernel. This issue allows a device to be inserted twice     into a doubly-linked list, leading to a use-after-free     when one of these devices is removed. The highest     threat from this vulnerability is to confidentiality,     integrity, as well as system availability. Versions     before kernel 5.12-rc6 are affected(CVE-2021-3483)

  - An issue was discovered in the FUSE filesystem     implementation in the Linux kernel before 5.10.6, aka     CID-5d069dbe8aaf. fuse_do_getattr() calls     make_bad_inode() in inappropriate situations, causing a     system crash. NOTE: the original fix for this     vulnerability was incomplete, and its incompleteness is     tracked as CVE-2021-28950.(CVE-2020-36322)

  - An out-of-bounds (OOB) memory write flaw was found in     list_devices in drivers/md/dm-ioctl.c in the     Multi-device driver module in the Linux kernel before     5.12. A bound check failure allows an attacker with     special user (CAP_SYS_ADMIN) privilege to gain access     to out-of-bounds memory leading to a system crash or a     leak of internal kernel information. The highest threat     from this vulnerability is to system     availability.(CVE-2021-31916)

  - A vulnerability was found in Linux Kernel, where a     refcount leak in llcp_sock_connect() causing     use-after-free which might lead to privilege     escalations.(CVE-2020-25671)

  - A vulnerability was found in Linux Kernel where     refcount leak in llcp_sock_bind() causing     use-after-free which might lead to privilege     escalations.(CVE-2020-25670)

  - A memory leak vulnerability was found in Linux kernel     in llcp_sock_connect(CVE-2020-25672)

  - The Linux kernel before 5.11.14 has a use-after-free in     cipso_v4_genopt in net/ipv4/cipso_ipv4.c because the     CIPSO and CALIPSO refcounting for the DOI definitions     is mishandled, aka CID-ad5d07f4a9cd. This leads to     writing an arbitrary value.(CVE-2021-33033)

  - Use After Free vulnerability in nfc sockets in the     Linux Kernel before 5.12.4 allows local attackers to     elevate their privileges. In typical configurations,     the issue can only be triggered by a privileged local     user with the CAP_NET_RAW capability.(CVE-2021-23134)

  - A flaw use-after-free in function     hci_sock_bound_ioctl() of the Linux kernel HCI     subsystem was found in the way user detaches bluetooth     dongle or other way triggers unregister bluetooth     device event. A local user could use this flaw to crash     the system or escalate their privileges on the     system.(CVE-2021-3573)

  - An issue was discovered in the Linux kernel through     5.10.11. PI futexes have a kernel stack use-after-free     during fault handling, allowing local users to execute     code in the kernel, aka     CID-34b1a1ce1458.(CVE-2021-3347)

  - A vulnerability was found in Linux kernel where     non-blocking socket in llcp_sock_connect() leads to     leak and eventually hanging-up the     system.(CVE-2020-25673)

  - net/bluetooth/hci_request.c in the Linux kernel through     5.12.2 has a race condition for removal of the HCI     controller.(CVE-2021-32399)

  - In all Qualcomm products with Android releases from CAF     using the Linux kernel, during DMA allocation, due to     wrong data type of size, allocation size gets truncated     which makes allocation succeed when it should     fail.(CVE-2017-9725)

  - A flaw double-free memory corruption in the Linux     kernel HCI device initialization subsystem was found in     the way user attach malicious HCI TTY Bluetooth device.
    A local user could use this flaw to crash the system.
    This flaw affects all the Linux kernel versions     starting from 3.13.(CVE-2021-3564)

  - A flaw was found in the CAN BCM networking protocol in     the Linux kernel, where a local attacker can abuse a     flaw in the CAN subsystem to corrupt memory, crash the     system or escalate privileges.(CVE-2021-3609)

  - The ip6gre_err function in net/ipv6/ip6_gre.c in the     Linux kernel allows remote attackers to have     unspecified impact via vectors involving GRE flags in     an IPv6 packet, which trigger an out-of-bounds     access.(CVE-2017-5897)

  - An Out-of-Bounds Read was discovered in     arch/arm/mach-footbridge/personal-pci.c in the Linux     kernel through 5.12.11 because of the lack of a check     for a value that shouldn't be negative, e.g., access to     element -2 of an array, aka     CID-298a58e165e4.(CVE-2021-32078)

  - In the Linux kernel before 4.20.8,     kvm_ioctl_create_device in virt/kvm/kvm_main.c     mishandles reference counting because of a race     condition, leading to a use-after-free.(CVE-2019-6974)

  - In uvc_scan_chain_forward of uvc_driver.c, there is a     possible linked list corruption due to an unusual root     cause. This could lead to local escalation of privilege     in the kernel with no additional execution privileges     needed. User interaction is not needed for     exploitation.(CVE-2020-0404)

  - In create_pinctrl of core.c, there is a possible out of     bounds read due to a use after free. This could lead to     local information disclosure with no additional     execution privileges needed. User interaction is not     needed for exploitation.(CVE-2020-0427)

  - In kbd_keycode of keyboard.c, there is a possible out     of bounds write due to a missing bounds check. This     could lead to local escalation of privilege with no     additional execution privileges needed. User     interaction is not needed for exploitation.Product:
    AndroidVersions: Android kernelAndroid ID:
    A-144161459(CVE-2020-0431)

  - In blk_mq_queue_tag_busy_iter of blk-mq-tag.c, there is     a possible use after free due to improper locking. This     could lead to local escalation of privilege with no     additional execution privileges needed. User     interaction is not needed for     exploitation.(CVE-2020-0433)

  - In various methods of hid-multitouch.c, there is a     possible out of bounds write due to a missing bounds     check. This could lead to local escalation of privilege     with no additional execution privileges needed. User     interaction is not needed for     exploitation.(CVE-2020-0465)

  - A vulnerability was found in the Linux Kernel where the     function sunkbd_reinit having been scheduled by     sunkbd_interrupt before sunkbd being freed. Though the     dangling pointer is set to NULL in sunkbd_disconnect,     there is still an alias in sunkbd_reinit causing Use     After Free.(CVE-2020-25669)

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

According to the versions of the kernel packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - The kernel package contains the Linux kernel (vmlinuz),     the core of any Linux operating system. The kernel     handles the basic functions of the operating system:
    memory allocation, process allocation, device input and     output, etc.Security Fix(es):In create_pinctrl of     core.c, there is a possible out of bounds read due to a     use after free. This could lead to local information     disclosure with no additional execution privileges     needed.(CVE-2020-0427)NULL-ptr deref in the     spk_ttyio_receive_buf2() function in     spk_ttyio.c.(CVE-2020-27830)In do_epoll_ctl and     ep_loop_check_proc of eventpoll.c, there is a possible     use after free due to a logic error. This could lead to     local escalation of privilege with no additional     execution privileges needed.(CVE-2020-0466)In the     nl80211_policy policy of nl80211.c, there is a possible     out of bounds read due to a missing bounds check. This     could lead to local information disclosure with System     execution privileges     needed.(CVE-2020-27068)use-after-free read in     sunkbd_reinit in     drivers/input/keyboard/sunkbd.c.(CVE-2020-25669)A flaw     was found in the Linux kernels implementation of MIDI,     where an attacker with a local account and the     permissions to issue an ioctl commands to midi devices,     could trigger a use-after-free. A write to this     specific memory while freed and before use could cause     the flow of execution to change and possibly allow for     memory corruption or privilege     escalation.(CVE-2020-27786)An issue was discovered in     romfs_dev_read in fs/romfs/storage.c in the Linux     kernel before 5.8.4. Uninitialized memory leaks to     userspace, aka CID-bcf85fcedfdd.(CVE-2020-29371)A     slab-out-of-bounds read in fbcon in the Linux kernel     before 5.9.7 could be used by local attackers to read     privileged information or potentially crash the kernel,     aka CID-3c4e0dff2095. This occurs because     KD_FONT_OP_COPY in drivers/tty/vt/vt.c can be used for     manipulations such as font height.(CVE-2020-28974)A     locking inconsistency issue was discovered in the tty     subsystem of the Linux kernel through 5.9.13.
    drivers/tty/tty_io.c and drivers/tty/tty_jobctrl.c may     allow a read-after-free attack against TIOCGSID, aka     CID-c8bcd9c5be24.(CVE-2020-29660)A locking issue was     discovered in the tty subsystem of the Linux kernel     through 5.9.13. drivers/tty/tty_jobctrl.c allows a     use-after-free attack against TIOCSPGRP, aka     CID-54ffccbf053b.(CVE-2020-29661)An issue was     discovered in drivers/accessibility/speakup/spk_ttyio.c     in the Linux kernel through 5.9.9. Local attackers on     systems with the speakup driver could cause a local     denial of service attack, aka CID-d41227544427. This     occurs because of an invalid free when the line     discipline is used more than once.(CVE-2020-28941)A     buffer over-read (at the framebuffer layer) in the     fbcon code in the Linux kernel before 5.8.15 could be     used by local attackers to read kernel memory, aka     CID-6735b4632def.(CVE-2020-28915)A flaw in the way     reply ICMP packets are limited in the Linux kernel     functionality was found that allows to quickly scan     open UDP ports. This flaw allows an off-path remote     user to effectively bypassing source port UDP     randomization. The highest threat from this     vulnerability is to confidentiality and possibly     integrity, because software that relies on UDP source     port randomization are indirectly affected as well.
    Kernel versions before 5.10 may be vulnerable to this     issue.(CVE-2020-25705)race condition in fg_console can     lead to use-after-free in     con_font_op.(CVE-2020-25668)The Linux kernel before     version 5.8 is vulnerable to a NULL pointer dereference     in     drivers/tty/serial/8250/8250_core.c:serial8250_isa_init
    _ports() that allows local users to cause a denial of     service by using the p->serial_in pointer which     uninitialized.(CVE-2020-15437)An issue was discovered     in the Linux kernel through 5.9.1, as used with Xen     through 4.14.x. Guest OS users can cause a denial of     service (host OS hang) via a high rate of events to     dom0, aka CID-e99502f76271.(CVE-2020-27673)An issue was     discovered in __split_huge_pmd in mm/huge_memory.c in     the Linux kernel before 5.7.5. The copy-on-write     implementation can grant unintended write access     because of a race condition in a THP mapcount check,     aka CID-c444eb564fb1.(CVE-2020-29368)An issue was     discovered in the Linux kernel through 5.9.1, as used     with Xen through 4.14.x.
    drivers/xen/events/events_base.c allows event-channel     removal during the event-handling loop (a race     condition). This can cause a use-after-free or NULL     pointer dereference, as demonstrated by a dom0 crash     via events for an in-reconfiguration paravirtualized     device, aka CID-073d0552ead5.(CVE-2020-27675)A flaw was     found in the way RTAS handled memory accesses in     userspace to kernel communication. On a locked down     (usually due to Secure Boot) guest system running on     top of PowerVM or KVM hypervisors (pseries platform) a     root like local user could use this flaw to further     increase their privileges to that of a running     kernel.(CVE-2020-27777)

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

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - In create_pinctrl of core.c, there is a possible out of bounds read due to a use after free. This could     lead to local information disclosure with no additional execution privileges needed. User interaction is     not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-140550171     (CVE-2020-0427)

Note that Nessus relies on the presence of the package as reported by the vendor.

遠端 Redhat Enterprise Linux 7 主機上安裝的套件受到 RHSA-2021: 0857 公告中提及的多個弱點影響。

  - 核心：惡意 USB 裝置可導致多個超出邊界寫入 (CVE-2019-19532)

  - 核心：pinctrl 子系統中存在超出邊界讀取弱點。(CVE-2020-0427)

  - 核心：效能計數器爭用情形釋放後使用 (CVE-2020-14351)

  - 核心：net/netfilter/nf_conntrack_netlink.c 的 ctnetlink_parse_tuple_filter 存在本機緩衝區溢位問題 (CVE-2020-25211)

  - 核心：兩個 Geneve 端點之間的 Geneve/IPsec 流量可能未加密 (CVE-2020-25645)

  - 核心：vt_do_kdgkb_ioctl 中的讀取存在釋放後使用弱點 (CVE-2020-25656)

  - 核心：ICMP 速率限制可用於發動 DNS 毒害攻擊 (CVE-2020-25705)

  - 核心：SCSI 目標 (LIO) 會寫入至 ILO 還原儲存上的任何區塊 (CVE-2020-28374)

  - 核心：drivers/tty/tty_jobctrl.c 中的鎖定問題可導致釋放後使用 (CVE-2020-29661)

  - 核心：drivers/gpu/drm/i915/i915_gem_gtt.c 的 i915_ppgtt_close 中發生釋放後使用 (CVE-2020-7053)

  - 核心：增加 slab 洩漏導致 DoS (CVE-2021-20265)

請注意，Nessus 並未測試這些問題，而是僅依據應用程式自我報告的版本號碼作出判斷。

遠端 Redhat Enterprise Linux 7 主機上安裝的套件受到 RHSA-2021:0856 公告中提及的多個弱點影響。

  - 核心：惡意 USB 裝置可導致多個超出邊界寫入 (CVE-2019-19532)

  - 核心：pinctrl 子系統中存在超出邊界讀取弱點。(CVE-2020-0427)

  - 核心：drivers/gpu/drm/i915/i915_gem_gtt.c 的 i915_ppgtt_close 中發生釋放後使用 (CVE-2020-7053)

  - 核心：效能計數器爭用情形釋放後使用 (CVE-2020-14351)

  - 核心：net/netfilter/nf_conntrack_netlink.c 的 ctnetlink_parse_tuple_filter 存在本機緩衝區溢位問題 (CVE-2020-25211)

  - 核心：兩個 Geneve 端點之間的 Geneve/IPsec 流量可能未加密 (CVE-2020-25645)

  - 核心：vt_do_kdgkb_ioctl 中的讀取存在釋放後使用弱點 (CVE-2020-25656)

  - 核心：ICMP 速率限制可用於發動 DNS 毒害攻擊 (CVE-2020-25705)

  - 核心：SCSI 目標 (LIO) 會寫入至 ILO 還原儲存上的任何區塊 (CVE-2020-28374)

  - 核心：drivers/tty/tty_jobctrl.c 中的鎖定問題可導致釋放後使用 (CVE-2020-29661)

  - 核心：增加 slab 洩漏導致 DoS (CVE-2021-20265)

請注意，Nessus 並未測試這些問題，而是僅依據應用程式自我報告的版本號碼作出判斷。

遠端主機上安裝的 AOS 版本低於 5.15.7。因此，它受到 NXSA-AOS-5.15.7 公告中所提及的多個弱點影響。

  - GNU Screen 4.8.0 之前所有版本中的 encoding.c 允許遠端攻擊者透過特製的 UTF-8 字元序列造成拒絕服務 (無效的寫入存取和應用程式損毀)，或可能造成其他不明影響。(CVE-2021-26937)

  - Oracle Java SE 的 Java SE、Java SE Embedded、Oracle GraalVM 企業版產品中存在弱點 (元件：Libraries)。受影響的支援版本是 Java SE：7u291、8u281、11.0.10、16；
    Java SE Embedded：8u281；Oracle GraalVM 企業版：19.3.5、20.3.1.2 和 21.0.0.2。攻擊此弱點具有難度，能夠透過多個通訊協定存取網路的未經驗證攻擊者可利用此弱點入侵 Java SE、Java SE Embedded、Oracle GraalVM 企業版。若要成功攻擊，必須有攻擊者以外之他人的互動。若攻擊成功，攻擊者可在未經授權的情況下，建立、刪除或修改重要資料或所有 Java SE、Java SE Embedded、Oracle GraalVM 企業版可存取的資料。注意：此弱點適用於會載入並執行不受信任的程式碼 (例如，來自網際網路的程式碼) 並依賴 Java 沙箱獲得安全性的 Java 部署。(CVE-2021-2163)

  - 在 5.3.9 之前版本的 Linux 核心中，存在多個超出邊界寫入錯誤，這可能是 Linux 核心 HID 驅動程式中的惡意 USB 裝置所造成，即 CID-d9d4b1e46d95。這會影響 drivers/hid/hid-axff.c、drivers/hid/hid-dr.c、drivers/hid/hid-emsff.c、drivers/hid/hid-gaff.c、drivers/hid/hid-holtekff.c、drivers/hid/hid-lg2ff.c、drivers/hid/hid-lg3ff.c、drivers/hid/hid-lg4ff.c、drivers/hid/hid-lgff.c、drivers/hid/hid-logitech-hidpp.c、drivers/hid/hid-microsoft.c、drivers/hid/hid-sony.c、drivers/hid/hid-tmff.c 和 drivers/hid/hid-zpff.c。(CVE-2019-19532)

  - 在 core.c 的 create_pinctrl 中，可能因釋放後使用而發生超出邊界讀取。這可以導致本機資訊洩漏，而不需要額外的執行特權。惡意利用弱點不需要使用者互動。產品：AndroidVersions：Android kernelAndroid ID：A-140550171 (CVE-2020-0427)

  - 在 Linux 核心中發現一個缺陷。在 perf 子系統中發現一個釋放後使用記憶體缺陷，具有監控 perf 事件權限的本機攻擊者可利用此缺陷損毀記憶體，並可能提升權限。此弱點對於資料的機密性和完整性以及系統可用性威脅最大。(CVE-2020-14351)

請注意，Nessus 並未測試這些問題，而是僅依據應用程式自我報告的版本號碼作出判斷。

遠端主機上安裝的 AOS 版本低於 5.15.5.5。因此，它受到 NXSA-AOS-5.15.5.5 公告中所提及的多個弱點影響。

  - GNU Screen 4.8.0 之前所有版本中的 encoding.c 允許遠端攻擊者透過特製的 UTF-8 字元序列造成拒絕服務 (無效的寫入存取和應用程式損毀)，或可能造成其他不明影響。(CVE-2021-26937)

  - Oracle Java SE 的 Java SE、Java SE Embedded、Oracle GraalVM 企業版產品中存在弱點 (元件：Libraries)。受影響的支援版本是 Java SE：7u291、8u281、11.0.10、16；
    Java SE Embedded：8u281；Oracle GraalVM 企業版：19.3.5、20.3.1.2 和 21.0.0.2。攻擊此弱點具有難度，能夠透過多個通訊協定存取網路的未經驗證攻擊者可利用此弱點入侵 Java SE、Java SE Embedded、Oracle GraalVM 企業版。若要成功攻擊，必須有攻擊者以外之他人的互動。若攻擊成功，攻擊者可在未經授權的情況下，建立、刪除或修改重要資料或所有 Java SE、Java SE Embedded、Oracle GraalVM 企業版可存取的資料。注意：此弱點適用於會載入並執行不受信任的程式碼 (例如，來自網際網路的程式碼) 並依賴 Java 沙箱獲得安全性的 Java 部署。(CVE-2021-2163)

  - 在 5.3.9 之前版本的 Linux 核心中，存在多個超出邊界寫入錯誤，這可能是 Linux 核心 HID 驅動程式中的惡意 USB 裝置所造成，即 CID-d9d4b1e46d95。這會影響 drivers/hid/hid-axff.c、drivers/hid/hid-dr.c、drivers/hid/hid-emsff.c、drivers/hid/hid-gaff.c、drivers/hid/hid-holtekff.c、drivers/hid/hid-lg2ff.c、drivers/hid/hid-lg3ff.c、drivers/hid/hid-lg4ff.c、drivers/hid/hid-lgff.c、drivers/hid/hid-logitech-hidpp.c、drivers/hid/hid-microsoft.c、drivers/hid/hid-sony.c、drivers/hid/hid-tmff.c 和 drivers/hid/hid-zpff.c。(CVE-2019-19532)

  - 在 core.c 的 create_pinctrl 中，可能因釋放後使用而發生超出邊界讀取。這可以導致本機資訊洩漏，而不需要額外的執行特權。惡意利用弱點不需要使用者互動。產品：AndroidVersions：Android kernelAndroid ID：A-140550171 (CVE-2020-0427)

  - 在 Linux 核心中發現一個缺陷。在 perf 子系統中發現一個釋放後使用記憶體缺陷，具有監控 perf 事件權限的本機攻擊者可利用此缺陷損毀記憶體，並可能提升權限。此弱點對於資料的機密性和完整性以及系統可用性威脅最大。(CVE-2020-14351)

請注意，Nessus 並未測試這些問題，而是僅依據應用程式自我報告的版本號碼作出判斷。

遠端 Redhat Enterprise Linux 8 主機上安裝的套件受到 RHSA-2021:4356 公告中提及的多個弱點影響。

  - 核心：Intel 圖形卡的資訊洩漏問題。(CVE-2019-14615)

  - 核心：pinctrl 子系統中存在超出邊界讀取弱點。(CVE-2020-0427)

  - 核心：某些 Intel(R) Ethernet E810 Adapter 驅動程式中存在輸入驗證不當問題 (CVE-2020-24502)

  - 核心：某些 Intel(R) Ethernet E810 Adapter 驅動程式中存在存取控制不足問題 (CVE-2020-24503)

  - 核心：某些 Intel(R) Ethernet E810 Adapter 驅動程式中存在資源消耗不受控制的問題 (CVE-2020-24504)

  - 核心：重新連線時未清除片段快取 (CVE-2020-24586)

  - 核心：重組在不同金鑰下加密的片段 (CVE-2020-24587)

  - 核心：wifi 幀承載被錯誤剖析為 L2 幀 (CVE-2020-24588)

  - 核心：從未經驗證的 wifi 用戶端轉送 EAPOL (CVE-2020-26139)

  - 核心：在受保護的網路中接受純文字資料幀 (CVE-2020-26140)

  - 核心：不驗證分段幀的 TKIP MIC (CVE-2020-26141)

  - 核心：在受保護的網路中接受分段式純文字幀 (CVE-2020-26143)

  - 核心：接受以 RFC1042 標頭開頭的未加密 A-MSDU 幀 (CVE-2020-26144)

  - 核心：接受純文字廣播片段作為完整幀 (CVE-2020-26145)

  - 核心：重組具有非連續封包編號的加密片段 (CVE-2020-26146)

  - 核心：重組混合的加密/純文字片段 (CVE-2020-26147)

  - 核心：powerpc：RTAS 呼叫可用來危害核心完整性 (CVE-2020-27777)

  - kernel：由於 THP mapcount 檢查中存在爭用情形，寫入時複製實作可授予非預定的寫入存取權 (CVE-2020-29368)

  - 核心：drivers/tty/tty_io.c 和 drivers/tty/tty_jobctrl.c 中的鎖定不一致會導致釋放後讀取 (CVE-2020-29660)

  - 核心：在 drivers/net/wireless/marvell/mwifiex/join.c 的 mwifiex_cmd_802_11_ad_hoc_start 函式中，透過長 SSID 值可觸發緩衝區溢位問題 (CVE-2020-36158)

  - 核心：在 virt/kvm/kvm_main.c 的 kvm_io_bus_unregister_dev 函式中，執行 kmalloc 失敗時會發生記憶體流失問題 (CVE-2020-36312)

  - 核心：net/bluetooth/hci_event.c 的 hci_extended_inquiry_result_evt() 中存在 slab 超出邊界讀取問題 (CVE-2020-36386)

  - 核心：BlueZ 中的不當存取控制可導致資訊洩漏弱點。(CVE-2021-0129)

  - 核心：drivers/block/nbd.c 的 ndb_queue_rq() 中存在釋放後使用弱點 (CVE-2021-3348)

  - 核心：Linux 核心的 eBPF RINGBUF 對應配置過大 (CVE-2021-3489)

  - 核心：HCI 裝置初始化失敗時，藍牙子系統中會發生雙重釋放 (CVE-2021-3564)

  - 核心：hci_sock_bound_ioctl() 函式中的釋放後使用弱點 (CVE-2021-3573)

  - 核心：div/mod 上的 eBPF 32 位元來源暫存器截斷 (CVE-2021-3600)

  - 核心：lib/list_debug.c:50 存在流程表清單 del 損毀和核心錯誤 (CVE-2021-3635)

  - 核心：net/mac802154/llsec.c 的 llsec_key_alloc() 中存在 NULL 指標解除參照弱點 (CVE-2021-3659)

  - 核心：rb_per_cpu_empty() 中的 DoS 弱點 (CVE-2021-3679)

  - 核心：overlayfs：在非特權使用者命名空間內掛載 overlayfs 可能會造成檔案洩漏 (CVE-2021-3732)

   核心：__cgroup_bpf_run_filter_getsockopt() 中的堆積溢位弱點 (CVE-2021-20194)

  - 核心：setsockopt 系統呼叫未受信任的指標解除參照和資訊洩漏弱點 (CVE-2021-20239)

  - 核心：sctp_destroy_sock list_del 中的爭用條件 (CVE-2021-23133)

  - 核心：fuse：由於重試迴圈不斷發現相同的錯誤 inode，可能會發生 CPU 停頓問題 (CVE-2021-28950)

  - 核心：在 arch/x86/events/intel/ds.c 中的 intel_pmu_drain_pebs_nhm 發生系統當機 (CVE-2021-28971)

  - 核心：可以迴避防範推測性超出邊界載入的指標算術作業序列保護機制，造成核心記憶體的內容遭洩漏 (CVE-2021-29155)

  - 核心：net/tipc/node.c 中 tipc_nl_retrieve_key 函式的不當輸入驗證弱點 (CVE-2021-29646)

  - 核心：在 net/netfilter/x_tables.c 和 include/linux/netfilter/x_tables.h 中指派新表格值時缺少完整的記憶體屏障，可導致 DoS (CVE-2021-29650)

  - 核心：處理 eBPF 程式時可造成本機權限提升 (CVE-2021-31440)

  - 核心：可以迴避防範推測性指標算術的堆疊指標保護機制，造成核心記憶體的內容遭洩漏 (CVE-2021-31829)

  - 核心：drivers/md/dm-ioctl.c 中的超出邊界陣列存取弱點 (CVE-2021-31916)

  - 核心：net/ipv4/cipso_ipv4.c 中 cipso_v4_genopt 的釋放後使用弱點 (CVE-2021-33033)

  - 核心：Intel(R) Ethernet ixgbe 驅動程式中存在不當輸入驗證問題，因此經驗證的使用者可以透過本機存取權限造成拒絕服務 (CVE-2021-33098)

  - 核心：BPF 驗證程式對指標算術作業強制執行不正確的限制，因而導致超出邊界讀取和寫入 (CVE-2021-33200)

  - 核心：sysfs 讀取中可能發生緩衝區溢位 (CVE-2022-20166)

請注意，Nessus 並未測試這些問題，而是僅依據應用程式自我報告的版本號碼作出判斷。

遠端主機上安裝的 AOS 版本低於 6.1。因此，它受到 NXSA-AOS-6.1 公告中所提及的多個弱點影響。

  在 2.9.5 之前 (如 10 之前的 Apple iOS、10.12 之前的 OS X、10 之前的 tvOS 和 3 之前的 watchOS 及其他產品中所使用) 的 libxml2 中，xpointer.c 未在 XPointer 範圍中禁止命名空間節點，遠端攻擊者因而得以透過特製 XML 文件執行任意程式碼，或造成拒絕服務 (釋放後使用和記憶體損毀)。(CVE-2016-4658)

  - 3.73 或 3.68.1 ESR 之前版本的 NSS (網路安全性服務) 版本在處理 DER 編碼的 DSA 或 RSA-PSS 簽章時，容易受到堆積溢位的影響。使用 NSS 處理在 CMS、S/MIME、PKCS \#7 或 PKCS \#12 內編碼之簽章的應用程式可能會受此影響。使用 NSS 進行憑證驗證或其他 TLS、X.509、OCSP 或 CRL 功能的應用程式可能會受此影響，具體視該等應用程序設定 NSS 的方式而定。*注意：此弱點不會影響 Mozilla Firefox。* 但是，使用 NSS 進行簽章驗證的電子郵件用戶端和 PDF 檢視器 (例如 Thunderbird、LibreOffice、Evolution 和 Evince)，據信會受到影響。此弱點會影響 3.73 和 3.68.1 之前版本的 NSS。
    (CVE-2021-43527)

  具有可利用推測執行和間接分支預測之微處理器的系統可以允許透過旁路分析，向具有本機使用者存取權的攻擊者洩漏未經授權的資訊。
    (CVE-2017-5715)

  具有可利用推測執行和分支預測之微處理器的系統可能允許透過旁路分析，在未經授權的情況下向具有本機使用者存取權的攻擊者洩漏資訊。
    (CVE-2017-5753)

  具有可利用推測執行和間接分支預測之微處理器的系統可以允許透過資料快取旁路分析，向具有本機使用者存取權的攻擊者洩漏未經授權的資訊。(CVE-2017-5754)

請注意，Nessus 並未測試這些問題，而是僅依據應用程式自我報告的版本號碼作出判斷。

ID	名稱	產品	系列	已發布	已更新	嚴重性
143639	SUSE SLES12 Security Update : kernel (SUSE-SU-2020:3503-1)	Nessus	SuSE Local Security Checks	2020/12/9	2022/12/5	high
143699	SUSE SLES12 Security Update : kernel (SUSE-SU-2020:2907-1)	Nessus	SuSE Local Security Checks	2020/12/9	2022/5/11	high
145726	EulerOS 2.0 SP8 : kernel (EulerOS-SA-2021-1148)	Nessus	Huawei Local Security Checks	2021/2/1	2023/2/9	critical
153271	EulerOS 2.0 SP2 : kernel (EulerOS-SA-2021-2392)	Nessus	Huawei Local Security Checks	2021/9/14	2022/5/9	critical
144687	EulerOS 2.0 SP9 : kernel (EulerOS-SA-2021-1009)	Nessus	Huawei Local Security Checks	2021/1/4	2023/2/9	critical
246625	Linux Distros Unpatched Vulnerability : CVE-2020-0427	Nessus	Misc.	2025/8/9	2025/10/28	medium
178888	EulerOS Virtualization 3.0.6.6 : kernel (EulerOS-SA-2023-2444)	Nessus	Huawei Local Security Checks	2023/7/26	2025/10/7	critical
147827	RHEL 7：kernel-rt (RHSA-2021: 0857)	Nessus	Red Hat Local Security Checks	2021/3/17	2024/11/7	high
147835	RHEL 7：核心 (RHSA-2021:0856)	Nessus	Red Hat Local Security Checks	2021/3/17	2024/11/7	high
164562	Nutanix AOS：多個弱點 (NXSA-AOS-5.15.7)	Nessus	Misc.	2022/9/1	2025/7/22	critical
164590	Nutanix AOS：多個弱點 (NXSA-AOS-5.15.5.5)	Nessus	Misc.	2022/9/1	2025/7/22	critical
155219	RHEL 8：核心 (RHSA-2021:4356)	Nessus	Red Hat Local Security Checks	2021/11/11	2025/8/15	high
164603	Nutanix AOS：多個弱點 (NXSA-AOS-6.1)	Nessus	Misc.	2022/9/1	2025/10/7	high

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