The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2019:2043 advisory.

    The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with     extremely high determinism requirements.

    Security Fix(es):

    * Kernel: vhost_net: infinite loop while receiving packets leads to DoS (CVE-2019-3900)

    * Kernel: page cache side channel attacks (CVE-2019-5489)

    * kernel: Buffer overflow in hidp_process_report (CVE-2018-9363)

    * kernel: l2tp: Race condition between pppol2tp_session_create() and l2tp_eth_create() (CVE-2018-9517)

    * kernel: kvm: guest userspace to guest kernel write (CVE-2018-10853)

    * kernel: use-after-free Read in vhost_transport_send_pkt (CVE-2018-14625)

    * kernel: use-after-free in ucma_leave_multicast in drivers/infiniband/core/ucma.c (CVE-2018-14734)

    * kernel: Mishandling of indirect calls weakens Spectre mitigation for paravirtual guests (CVE-2018-15594)

    * kernel: TLB flush happens too late on mremap (CVE-2018-18281)

    * kernel: Heap address information leak while using L2CAP_GET_CONF_OPT (CVE-2019-3459)

    * kernel: Heap address information leak while using L2CAP_PARSE_CONF_RSP (CVE-2019-3460)

    * kernel: denial of service vector through vfio DMA mappings (CVE-2019-3882)

    * kernel: fix race condition between mmget_not_zero()/get_task_mm() and core dumping (CVE-2019-11599)

    * kernel: a NULL pointer dereference in drivers/scsi/megaraid/megaraid_sas_base.c leading to DoS     (CVE-2019-11810)

    * kernel: fs/ext4/extents.c leads to information disclosure (CVE-2019-11833)

    * kernel: Information exposure in fd_locked_ioctl function in drivers/block/floppy.c (CVE-2018-7755)

    * kernel: Memory leak in drivers/net/wireless/mac80211_hwsim.c:hwsim_new_radio_nl() can lead to potential     denial of service (CVE-2018-8087)

    * kernel: HID: debug: Buffer overflow in hid_debug_events_read() in drivers/hid/hid-debug.c     (CVE-2018-9516)

    * kernel: Integer overflow in the alarm_timer_nsleep function (CVE-2018-13053)

    * kernel: NULL pointer dereference in lookup_slow function (CVE-2018-13093)

    * kernel: NULL pointer dereference in xfs_da_shrink_inode function (CVE-2018-13094)

    * kernel: NULL pointer dereference in fs/xfs/libxfs/xfs_inode_buf.c (CVE-2018-13095)

    * kernel: Information leak in cdrom_ioctl_drive_status (CVE-2018-16658)

    * kernel: out-of-bound read in memcpy_fromiovecend() (CVE-2018-16885)

    * Kernel: KVM: leak of uninitialized stack contents to guest (CVE-2019-7222)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

    Additional Changes:

    For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.7 Release Notes     linked from the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

Security Fix(es) :

  - Kernel: vhost_net: infinite loop while receiving packets     leads to DoS (CVE-2019-3900)

  - Kernel: page cache side channel attacks (CVE-2019-5489)

  - kernel: Buffer overflow in hidp_process_report     (CVE-2018-9363)

  - kernel: l2tp: Race condition between     pppol2tp_session_create() and l2tp_eth_create()     (CVE-2018-9517)

  - kernel: kvm: guest userspace to guest kernel write     (CVE-2018-10853)

  - kernel: use-after-free Read in vhost_transport_send_pkt     (CVE-2018-14625)

  - kernel: use-after-free in ucma_leave_multicast in     drivers/infiniband/core/ucma.c (CVE-2018-14734)

  - kernel: Mishandling of indirect calls weakens Spectre     mitigation for paravirtual guests (CVE-2018-15594)

  - kernel: TLB flush happens too late on mremap     (CVE-2018-18281)

  - kernel: Heap address information leak while using     L2CAP_GET_CONF_OPT (CVE-2019-3459)

  - kernel: Heap address information leak while using     L2CAP_PARSE_CONF_RSP (CVE-2019-3460)

  - kernel: denial of service vector through vfio DMA     mappings (CVE-2019-3882)

  - kernel: fix race condition between     mmget_not_zero()/get_task_mm() and core dumping     (CVE-2019-11599)

  - kernel: a NULL pointer dereference in     drivers/scsi/megaraid/megaraid_sas_base.c leading to DoS     (CVE-2019-11810)

  - kernel: fs/ext4/extents.c leads to information     disclosure (CVE-2019-11833)

  - kernel: Information exposure in fd_locked_ioctl function     in drivers/block/floppy.c (CVE-2018-7755)

  - kernel: Memory leak in     drivers/net/wireless/mac80211_hwsim.c:hwsim_new_radio_nl     () can lead to potential denial of service     (CVE-2018-8087)

  - kernel: HID: debug: Buffer overflow in     hid_debug_events_read() in drivers/hid/hid-debug.c     (CVE-2018-9516)

  - kernel: Integer overflow in the alarm_timer_nsleep     function (CVE-2018-13053)

  - kernel: NULL pointer dereference in lookup_slow function     (CVE-2018-13093)

  - kernel: NULL pointer dereference in xfs_da_shrink_inode     function (CVE-2018-13094)

  - kernel: NULL pointer dereference in     fs/xfs/libxfs/xfs_inode_buf.c (CVE-2018-13095)

  - kernel: Information leak in cdrom_ioctl_drive_status     (CVE-2018-16658)

  - kernel: out-of-bound read in memcpy_fromiovecend()     (CVE-2018-16885)

  - Kernel: KVM: leak of uninitialized stack contents to     guest (CVE-2019-7222)

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2019-2029 advisory.

    - [scsi] scsi: megaraid_sas: return error when create DMA pool failed (Tomas Henzl) [1712861]     {CVE-2019-11810}
    - [net] tcp: enforce tcp_min_snd_mss in tcp_mtu_probing() (Florian Westphal) [1719915] {CVE-2019-11479}
    - [net] tcp: add tcp_min_snd_mss sysctl (Florian Westphal) [1719915] {CVE-2019-11479}
    - [net] tcp: limit payload size of sacked skbs (Florian Westphal) [1719595] {CVE-2019-11477}
    - [net] tcp: pass previous skb to tcp_shifted_skb() (Florian Westphal) [1719595] {CVE-2019-11477}
    - [net] tcp: tcp_fragment() should apply sane memory limits (Florian Westphal) [1719850] {CVE-2019-11478}
    - [mm] mincore.c: make mincore() more conservative (Rafael Aquini) [1664199] {CVE-2019-5489}
    - [kernel] alarmtimer: Prevent overflow for relative nanosleep (Artem Savkov) [1653677] {CVE-2018-13053}
    - [fs] ext4: zero out the unused memory region in the extent tree block (Lukas Czerner) [1715280]     {CVE-2019-11833}
    - [vhost] vsock: add weight support (Jason Wang) [1702943] {CVE-2019-3900}
    - [vhost] vhost_net: fix possible infinite loop (Jason Wang) [1702943] {CVE-2019-3900}
    - [vhost] introduce vhost_exceeds_weight() (Jason Wang) [1702943] {CVE-2019-3900}
    - [vhost] vhost_net: introduce vhost_exceeds_weight() (Jason Wang) [1702943] {CVE-2019-3900}
    - [vhost] vhost_net: use packet weight for rx handler, too (Jason Wang) [1702943] {CVE-2019-3900}
    - [vhost] vhost-net: set packet weight of tx polling to 2 * vq size (Jason Wang) [1702943] {CVE-2019-3900}
    - [x86] kvm: x86: use correct privilege level for sgdt/sidt/fxsave/fxrstor access (Paolo Bonzini)     [1657358] {CVE-2018-10853}
    - [x86] kvm: x86: pass kvm_vcpu to kvm_read_guest_virt and kvm_write_guest_virt_system (Paolo Bonzini)     [1657358] {CVE-2018-10853}
    - [x86] kvm: x86: introduce linear_{read,write}_system (Paolo Bonzini) [1657358] {CVE-2018-10853}
    - [char] ipmi_si: fix use-after-free of resource->name (Tony Camuso) [1714408] {CVE-2019-11811}
    - [fs] sunrpc: make visible processing error in bc_svc_process() ('J. Bruce Fields') [1653675]     {CVE-2018-16884}
    - [fs] sunrpc: remove unused xpo_prep_reply_hdr callback ('J. Bruce Fields') [1653675] {CVE-2018-16884}
    - [fs] sunrpc: remove svc_tcp_bc_class ('J. Bruce Fields') [1653675] {CVE-2018-16884}
    - [fs] sunrpc: replace svc_serv->sv_bc_xprt by boolean flag ('J. Bruce Fields') [1653675] {CVE-2018-16884}
    - [fs] sunrpc: use-after-free in svc_process_common() ('J. Bruce Fields') [1653675] {CVE-2018-16884}
    - [fs] svcauth_gss: Close connection when dropping an incoming message ('J. Bruce Fields') [1653675]     {CVE-2018-16884}
    - [x86] spectre: Fix an error message (Waiman Long) [1709296 1690335 1690348 1690358] {CVE-2018-12126     CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [documentation] x86/speculation/mds: Fix documentation typo (Waiman Long) [1709296 1690358 1690348     1690335] {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [documentation] Correct the possible MDS sysfs values (Waiman Long) [1709296 1690358 1690348 1690335]     {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [documentation] x86/mds: Add MDSUM variant to the MDS documentation (Waiman Long) [1709296 1690358     1690348 1690335] {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] speculation/mds: Add 'mitigations=' support for MDS (Waiman Long) [1709296 1690358 1690348     1690335] {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [documentation] s390/speculation: Support 'mitigations=' cmdline option (Waiman Long) [1709296 1690358     1690348 1690335] {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [documentation] powerpc/speculation: Support 'mitigations=' cmdline option (Waiman Long) [1709296     1690358 1690348 1690335] {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [documentation] x86/speculation: Support 'mitigations=' cmdline option (Waiman Long) [1709296 1690358     1690348 1690335] {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [kernel] cpu/speculation: Add 'mitigations=' cmdline option (Waiman Long) [1709296 1690358 1690348     1690335] {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] speculation/l1tf: Increase l1tf memory limit for Nehalem+ (Waiman Long) [1709296 1690358 1690348     1690335] {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] spectre: Simplify spectre_v2 command line parsing (Waiman Long) [1709296 1690358 1690348 1690335]     {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] speculation/mds: Properly set/clear mds_idle_clear static key (Waiman Long) [1709296 1690358     1690348 1690335 1707292] {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] speculation/mds: Print SMT vulnerable on MSBDS with mitigations off (Waiman Long) [1709296 1690358     1690348 1690335] {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] speculation/mds: Fix comment (Waiman Long) [1709296 1690358 1690348 1690335] {CVE-2018-12126     CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] speculation/mds: Add SMT warning message (Waiman Long) [1709296 1690358 1690348 1690335]     {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] speculation: Move arch_smt_update() call to after mitigation decisions (Waiman Long) [1709296     1690358 1690348 1690335] {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] speculation/mds: Add mds=full, nosmt cmdline option (Waiman Long) [1709296 1690358 1690348     1690335] {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [kernel] x86/speculation: Remove redundant arch_smt_update() invocation (Waiman Long) [1709296 1690358     1690348 1690335] {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] spec_ctrl: Update MDS mitigation status after late microcode load (Waiman Long) [1709296 1690358     1690348 1690335 1710501 1710498] {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] spec_ctrl: Add debugfs x86/smt_present file (Waiman Long) [1709296 1690358 1690348 1690335]     {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] spec_ctrl: Disable automatic enabling of STIBP with SMT on (Waiman Long) [1709296 1690358 1690348     1690335] {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [documentation] documentation: Add MDS vulnerability documentation (Waiman Long) [1709296 1690358     1690348 1690335] {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [documentation] documentation: Move L1TF to separate directory (Waiman Long) [1709296 1690358 1690348     1690335] {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [documentation] x86/speculation/mds: Add mitigation mode VMWERV (Waiman Long) [1709296 1690358 1690348     1690335] {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] speculation/mds: Add sysfs reporting for MDS (Waiman Long) [1709296 1690358 1690348 1690335]     {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] speculation/mds: Add mitigation control for MDS (Waiman Long) [1709296 1690358 1690348 1690335]     {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [documentation] x86/speculation/mds: Conditionally clear CPU buffers on idle entry (Waiman Long)     [1709296 1690358 1690348 1690335] {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] kvm/vmx: Add MDS protection when L1D Flush is not active (Waiman Long) [1709296 1690358 1690348     1690335] {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] speculation/mds: Clear CPU buffers on exit to user (Waiman Long) [1709296 1690358 1690348 1690335]     {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [documentation] x86/speculation/mds: Add mds_clear_cpu_buffers() (Waiman Long) [1709296 1690358 1690348     1690335] {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] kvm: Expose X86_FEATURE_MD_CLEAR to guests (Waiman Long) [1709296 1690358 1690348 1690335]     {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] speculation/mds: Add BUG_MSBDS_ONLY (Waiman Long) [1709296 1690358 1690348 1690335]     {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] speculation/mds: Add basic bug infrastructure for MDS (Waiman Long) [1709296 1690358 1690348     1690335] {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] speculation: Consolidate CPU whitelists (Waiman Long) [1709296 1690358 1690348 1690335]     {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] msr-index: Cleanup bit defines (Waiman Long) [1709296 1690358 1690348 1690335] {CVE-2018-12126     CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] l1tf: Show actual SMT state (Waiman Long) [1709296 1690358 1690348 1690335] {CVE-2018-12126     CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] speculation: Simplify sysfs report of VMX L1TF vulnerability (Waiman Long) [1709296 1690358     1690348 1690335] {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [kernel] x86/speculation: Rework SMT state change (Waiman Long) [1709296 1690358 1690348 1690335]     {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] speculation: Disable STIBP when enhanced IBRS is in use (Waiman Long) [1709296 1690358 1690348     1690335] {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] speculation: Move STIPB/IBPB string conditionals out of cpu_show_common() (Waiman Long) [1709296     1690358 1690348 1690335] {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] speculation: Enable cross-hyperthread spectre v2 STIBP mitigation (Waiman Long) [1709296 1690358     1690348 1690335] {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] spectre_v2: Make spectre_v2_mitigation mode available (Waiman Long) [1709296 1690358 1690348     1690335] {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] spec_ctrl: Add X86_FEATURE_USE_IBPB (Waiman Long) [1709296 1690358 1690348 1690335]     {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] spec_ctrl: Add casting to fix compilation error (Waiman Long) [1709296 1690358 1690348 1690335]     {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [tools] x86/cpu: Sanitize FAM6_ATOM naming (Waiman Long) [1709296 1690358 1690348 1690335]     {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}
    - [x86] cpufeatures: Add Intel PCONFIG cpufeature (Waiman Long) [1709296 1690358 1690348 1690335]     {CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091}

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

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

ID	名稱	產品	系列	已發布	已更新	嚴重性
127655	RHEL 7 : kernel-rt (RHSA-2019:2043)	Nessus	Red Hat Local Security Checks	2019/8/12	2024/11/6	high
128226	Scientific Linux Security Update : kernel on SL7.x x86_64 (20190806)	Nessus	Scientific Linux Local Security Checks	2019/8/27	2024/5/1	high
180763	Oracle Linux 7 : kernel (ELSA-2019-2029)	Nessus	Oracle Linux Local Security Checks	2023/9/7	2024/10/22	high

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