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Fencer Vulns
critical 9.8

CVE-2026-52993 in the critical feed json

tipc: fix double-free in tipc_buf_append()

published 2026-06-24 4 mo ago modified 2026-10-19 20 d ago also EUVD-2026-38861

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 34%
public exploits
0
none known

Summary

In the Linux kernel, the following vulnerability has been resolved:

tipc: fix double-free in tipc_buf_append()

tipc_msg_validate() can potentially reallocate the skb it is validating, freeing the old one. In tipc_buf_append(), it was being called with a pointer to a local variable which was a copy of the caller's skb pointer.

If the skb was reallocated and validation subsequently failed, the error handling path would free the original skb pointer, which had already been freed, leading to double-free.

Fix this by checking if head now points to a newly allocated reassembled skb. If it does, reassign *headbuf for later freeing operations.

Patch / fix

  • Linux Linux 5.10.258, 5.15.209, 6.1.175, 6.6.141, 6.12.91, 6.18.33, 7.0.10, 7.1
  • Red Hat Red Hat Enterprise Linux 10 0:6.12.0-211.40.1.el10_2
  • Red Hat Red Hat Enterprise Linux 8 0:4.18.0-553.147.1.el8_10, 0:4.18.0-553.147.1.rt7.488.el8_10
  • Red Hat Red Hat Enterprise Linux 9 0:5.14.0-687.33.1.el9_8
  • linux Debian 12 6.1.176-1
  • linux Debian 13 6.12.94-1
  • linux Debian 14 7.0.10-1

debian advisories DEBIAN-CVE-2026-52993

  • linux Ubuntu 22.04 LTS 5.15.0-186.196
  • linux Ubuntu 24.04 LTS 6.8.0-136.136
  • linux Ubuntu 26.04 LTS 7.0.0-28.28
  • linux-aws Ubuntu 22.04 LTS 5.15.0-1112.119
  • linux-aws Ubuntu 24.04 LTS 6.8.0-1061.64
  • linux-aws Ubuntu 26.04 LTS 7.0.0-1009.9
  • linux-gcp Ubuntu 22.04 LTS 5.15.0-1112.122
  • linux-gcp Ubuntu 24.04 LTS 6.8.0-1064.72

ubuntu advisories UBUNTU-CVE-2026-52993

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • kernel RHEL 9 5.14.0-687.33.1.el9_8
  • rv RHEL 9 5.14.0-687.33.1.el9_8
  • perf RHEL 9 5.14.0-687.33.1.el9_8
  • rtla RHEL 9 5.14.0-687.33.1.el9_8
  • libperf RHEL 9 5.14.0-687.33.1.el9_8
  • kernel-rt RHEL 9 5.14.0-687.33.1.el9_8
  • kernel-64k RHEL 9 5.14.0-687.33.1.el9_8
  • kernel-core RHEL 9 5.14.0-687.33.1.el9_8

red hat advisories RHSA-2026:75560RHSA-2026:74174RHSA-2026:73645RHSA-2026:70482RHSA-2026:70483RHSA-2026:69906

  • kernel-source Linux Micro 6.1, Linux Micro 6.0 6.4.0-50.2
  • kernel-default Linux Micro 6.1, Linux Micro 6.0 6.4.0-50.1
  • kernel-kvmsmall Linux Micro 6.1, Linux Micro 6.0 6.4.0-50.1
  • kernel-rt Linux Micro 6.1, Linux Micro 6.0 6.4.0-50.1
  • kernel-source-rt Linux Micro 6.1, Linux Micro 6.0 6.4.0-50.2
  • kernel-64kb SLE Module for Basesystem 15 SP7 6.4.0-150700.53.73.2
  • kernel-syms SLE Module for Development Tools 15 SP7 6.4.0-150700.53.73.1
  • kernel-azure SLE Module for Public Cloud 15 SP7 6.4.0-150700.53.73.2

suse advisories SUSE-SU-2026:22810-1SUSE-SU-2026:22809-1SUSE-SU-2026:22904-1SUSE-SU-2026:22903-1SUSE-SU-2026:3166-1SUSE-SU-2026:3156-1

  • kernel-rt openSUSE Leap 16.0 6.12.0-160000.36.1
  • dtb-aarch64 openSUSE Leap 16.0 6.12.0-160000.36.1
  • kernel-64kb openSUSE Leap 16.0 6.12.0-160000.36.1
  • kernel-syms openSUSE Leap 16.0 6.12.0-160000.36.1
  • kernel-azure openSUSE Leap 16.0 6.12.0-160000.36.1
  • kernel-obs-qa openSUSE Leap 16.0 6.12.0-160000.36.1
  • kernel-source openSUSE Leap 16.0 6.12.0-160000.36.1
  • kernel-default openSUSE Leap 16.0 6.12.0-160000.36.1

opensuse advisories openSUSE-SU-2026:21388-1

  • kernel AlmaLinux 9 5.14.0-687.33.1.el9_8
  • rv AlmaLinux 9 5.14.0-687.33.1.el9_8
  • perf AlmaLinux 9 5.14.0-687.33.1.el9_8
  • rtla AlmaLinux 9 5.14.0-687.33.1.el9_8
  • libperf AlmaLinux 9 5.14.0-687.33.1.el9_8
  • kernel-rt AlmaLinux 9 5.14.0-687.33.1.el9_8
  • kernel-64k AlmaLinux 9 5.14.0-687.33.1.el9_8
  • kernel-core AlmaLinux 9 5.14.0-687.33.1.el9_8

almalinux advisories ALSA-2026:49212ALSA-2026:47017ALSA-2026:45115ALSA-2026:45116

  • kernel Rocky Linux 9 5.14.0-687.33.1.el9_8
  • kernel Rocky Linux 10 6.12.0-211.40.1.el10_2
  • kernel Rocky Linux 8 4.18.0-553.147.1.el8_10.cloud.0.1
  • kernel-rt Rocky Linux 8 4.18.0-553.147.1.rt7.488.el8_10
  • kernel Rocky Linux 8 4.18.0-553.147.1.el8_10

rocky linux advisories RLSA-2026:49212RLSA-2026:47017RXSA-2026:45115RLSA-2026:45116RLSA-2026:45115

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-52993 updated cvss 7.0

kernel: tipc: fix double-free in tipc_buf_append()

  • Red Hat Enterprise Linux 9 kernel-rt, kernel-rt-kvm, kernel-rt-core, kernel-rt-modules, kernel-rt-debug-kvm, kernel-rt-debug-core, +12 more
    affected: no fix available
  • Red Hat CodeReady Linux Builder EUS (v.9.6) libperf 5.14.0-570.146.1.el9_6, kernel-debuginfo-common-s390x 5.14.0-570.146.1.el9_6, kernel-debuginfo-common-x86_64 5.14.0-570.146.1.el9_6, kernel-debuginfo-common-aarch64 5.14.0-570.146.1.el9_6, kernel-debuginfo-common-ppc64le 5.14.0-570.146.1.el9_6
    fixed: vendor fix RHSA-2026:74174
  • Red Hat Enterprise Linux AppStream (v. 9) rv 5.14.0-687.33.1.el9_8, perf 5.14.0-687.33.1.el9_8, rtla 5.14.0-687.33.1.el9_8, python3-perf 5.14.0-687.33.1.el9_8, kernel-devel-matched 5.14.0-687.33.1.el9_8, kernel-64k-devel-matched 5.14.0-687.33.1.el9_8, +7 more
    fixed: vendor fix RHSA-2026:49212
  • Red Hat Enterprise Linux AppStream (v. 10) rv 6.12.0-211.40.1.el10_2, perf 6.12.0-211.40.1.el10_2, rtla 6.12.0-211.40.1.el10_2, python3-perf 6.12.0-211.40.1.el10_2, kernel-devel-matched 6.12.0-211.40.1.el10_2, kernel-64k-devel-matched 6.12.0-211.40.1.el10_2, +7 more
    fixed: vendor fix RHSA-2026:47017
  • Red Hat Enterprise Linux AppStream E4S (v.9.2) perf 5.14.0-284.193.1.el9_2, rtla 5.14.0-284.193.1.el9_2, kernel-devel-matched 5.14.0-284.193.1.el9_2, kernel-64k-devel-matched 5.14.0-284.193.1.el9_2, kernel-debug-devel-matched 5.14.0-284.193.1.el9_2, kernel-debuginfo-common-s390x 5.14.0-284.193.1.el9_2, +5 more
    fixed: vendor fix RHSA-2026:70482
  • Red Hat Enterprise Linux AppStream E4S (v.9.4) rv 5.14.0-427.153.1.el9_4, perf 5.14.0-427.153.1.el9_4, rtla 5.14.0-427.153.1.el9_4, kernel-devel-matched 5.14.0-427.153.1.el9_4, kernel-64k-devel-matched 5.14.0-427.153.1.el9_4, kernel-debug-devel-matched 5.14.0-427.153.1.el9_4, +6 more
    fixed: vendor fix RHSA-2026:73645
  • Red Hat Enterprise Linux AppStream EUS (v. 10.0) rv 6.12.0-55.108.1.el10_0, perf 6.12.0-55.108.1.el10_0, rtla 6.12.0-55.108.1.el10_0, python3-perf 6.12.0-55.108.1.el10_0, kernel-devel-matched 6.12.0-55.108.1.el10_0, kernel-64k-devel-matched 6.12.0-55.108.1.el10_0, +7 more
    fixed: vendor fix RHSA-2026:75560
  • Red Hat Enterprise Linux AppStream EUS (v.9.6) rv 5.14.0-570.146.1.el9_6, perf 5.14.0-570.146.1.el9_6, rtla 5.14.0-570.146.1.el9_6, python3-perf 5.14.0-570.146.1.el9_6, kernel-devel-matched 5.14.0-570.146.1.el9_6, kernel-64k-devel-matched 5.14.0-570.146.1.el9_6, +7 more
    fixed: vendor fix RHSA-2026:74174
show 32 more
  • Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-553.147.1.el8_10, kernel 4.18.0-553.147.1.el8_10, bpftool 4.18.0-553.147.1.el8_10, kernel-core 4.18.0-553.147.1.el8_10, kernel-tools 4.18.0-553.147.1.el8_10, python3-perf 4.18.0-553.147.1.el8_10, +15 more
    fixed: vendor fix RHSA-2026:45115
  • Red Hat Enterprise Linux BaseOS (v. 9) kernel 5.14.0-687.33.1.el9_8, kernel-64k 5.14.0-687.33.1.el9_8, kernel-core 5.14.0-687.33.1.el9_8, kernel-tools 5.14.0-687.33.1.el9_8, kernel-modules 5.14.0-687.33.1.el9_8, kernel-64k-core 5.14.0-687.33.1.el9_8, +27 more
    fixed: vendor fix RHSA-2026:49212
  • Red Hat Enterprise Linux BaseOS (v. 10) kernel 6.12.0-211.40.1.el10_2, kernel-64k 6.12.0-211.40.1.el10_2, kernel-core 6.12.0-211.40.1.el10_2, kernel-tools 6.12.0-211.40.1.el10_2, kernel-modules 6.12.0-211.40.1.el10_2, kernel-64k-core 6.12.0-211.40.1.el10_2, +28 more
    fixed: vendor fix RHSA-2026:47017
  • Red Hat Enterprise Linux BaseOS AUS (v.8.4) perf 4.18.0-305.208.1.el8_4, kernel 4.18.0-305.208.1.el8_4, bpftool 4.18.0-305.208.1.el8_4, kernel-core 4.18.0-305.208.1.el8_4, kernel-tools 4.18.0-305.208.1.el8_4, python3-perf 4.18.0-305.208.1.el8_4, +8 more
    fixed: vendor fix RHSA-2026:69874
  • Red Hat Enterprise Linux BaseOS AUS (v.8.6) perf 4.18.0-372.216.1.el8_6, kernel 4.18.0-372.216.1.el8_6, bpftool 4.18.0-372.216.1.el8_6, kernel-core 4.18.0-372.216.1.el8_6, kernel-tools 4.18.0-372.216.1.el8_6, python3-perf 4.18.0-372.216.1.el8_6, +8 more
    fixed: vendor fix RHSA-2026:69906
  • Red Hat Enterprise Linux BaseOS E4S (v.8.8) perf 4.18.0-477.168.1.el8_8, kernel 4.18.0-477.168.1.el8_8, bpftool 4.18.0-477.168.1.el8_8, kernel-core 4.18.0-477.168.1.el8_8, kernel-tools 4.18.0-477.168.1.el8_8, python3-perf 4.18.0-477.168.1.el8_8, +9 more
    fixed: vendor fix RHSA-2026:69837
  • Red Hat Enterprise Linux BaseOS E4S (v.9.2) bpftool 7.0.0-284.193.1.el9_2, kernel 5.14.0-284.193.1.el9_2, kernel-64k 5.14.0-284.193.1.el9_2, kernel-core 5.14.0-284.193.1.el9_2, kernel-tools 5.14.0-284.193.1.el9_2, python3-perf 5.14.0-284.193.1.el9_2, +28 more
    fixed: vendor fix RHSA-2026:70482
  • Red Hat Enterprise Linux BaseOS E4S (v.9.4) bpftool 7.3.0-427.153.1.el9_4, kernel 5.14.0-427.153.1.el9_4, kernel-64k 5.14.0-427.153.1.el9_4, kernel-core 5.14.0-427.153.1.el9_4, kernel-tools 5.14.0-427.153.1.el9_4, python3-perf 5.14.0-427.153.1.el9_4, +28 more
    fixed: vendor fix RHSA-2026:73645
  • Red Hat Enterprise Linux BaseOS EUS (v. 10.0) kernel 6.12.0-55.108.1.el10_0, kernel-64k 6.12.0-55.108.1.el10_0, kernel-core 6.12.0-55.108.1.el10_0, kernel-tools 6.12.0-55.108.1.el10_0, kernel-modules 6.12.0-55.108.1.el10_0, kernel-64k-core 6.12.0-55.108.1.el10_0, +27 more
    fixed: vendor fix RHSA-2026:75560
  • Red Hat Enterprise Linux BaseOS EUS (v.9.6) kernel 5.14.0-570.146.1.el9_6, kernel-64k 5.14.0-570.146.1.el9_6, kernel-core 5.14.0-570.146.1.el9_6, kernel-tools 5.14.0-570.146.1.el9_6, kernel-modules 5.14.0-570.146.1.el9_6, kernel-64k-core 5.14.0-570.146.1.el9_6, +27 more
    fixed: vendor fix RHSA-2026:74174
  • Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4) perf 4.18.0-305.208.1.el8_4, kernel 4.18.0-305.208.1.el8_4, bpftool 4.18.0-305.208.1.el8_4, kernel-core 4.18.0-305.208.1.el8_4, kernel-tools 4.18.0-305.208.1.el8_4, python3-perf 4.18.0-305.208.1.el8_4, +15 more
    fixed: vendor fix RHSA-2026:69874
  • Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6) perf 4.18.0-372.216.1.el8_6, kernel 4.18.0-372.216.1.el8_6, bpftool 4.18.0-372.216.1.el8_6, kernel-core 4.18.0-372.216.1.el8_6, kernel-tools 4.18.0-372.216.1.el8_6, python3-perf 4.18.0-372.216.1.el8_6, +15 more
    fixed: vendor fix RHSA-2026:69906
  • Red Hat Enterprise Linux BaseOS TUS (v.8.8) perf 4.18.0-477.168.1.el8_8, kernel 4.18.0-477.168.1.el8_8, bpftool 4.18.0-477.168.1.el8_8, kernel-core 4.18.0-477.168.1.el8_8, kernel-tools 4.18.0-477.168.1.el8_8, python3-perf 4.18.0-477.168.1.el8_8, +8 more
    fixed: vendor fix RHSA-2026:69837
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) libperf 5.14.0-687.33.1.el9_8, kernel-debuginfo-common-s390x 5.14.0-687.33.1.el9_8, kernel-debuginfo-common-x86_64 5.14.0-687.33.1.el9_8, kernel-debuginfo-common-aarch64 5.14.0-687.33.1.el9_8, kernel-debuginfo-common-ppc64le 5.14.0-687.33.1.el9_8
    fixed: vendor fix RHSA-2026:49212
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) libperf 6.12.0-211.40.1.el10_2, kernel-debuginfo-common-s390x 6.12.0-211.40.1.el10_2, kernel-debuginfo-common-x86_64 6.12.0-211.40.1.el10_2, kernel-debuginfo-common-aarch64 6.12.0-211.40.1.el10_2, kernel-debuginfo-common-ppc64le 6.12.0-211.40.1.el10_2
    fixed: vendor fix RHSA-2026:47017
  • Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) libperf 6.12.0-55.108.1.el10_0, kernel-debuginfo-common-s390x 6.12.0-55.108.1.el10_0, kernel-debuginfo-common-x86_64 6.12.0-55.108.1.el10_0, kernel-debuginfo-common-aarch64 6.12.0-55.108.1.el10_0, kernel-debuginfo-common-ppc64le 6.12.0-55.108.1.el10_0
    fixed: vendor fix RHSA-2026:75560
  • Red Hat Enterprise Linux CRB (v. 8) kernel-debuginfo-common-x86_64 4.18.0-553.147.1.el8_10, kernel-debuginfo-common-aarch64 4.18.0-553.147.1.el8_10, kernel-debuginfo-common-ppc64le 4.18.0-553.147.1.el8_10
    fixed: vendor fix RHSA-2026:45115
  • Red Hat Enterprise Linux NFV (v. 8) kernel-rt 4.18.0-553.147.1.rt7.488.el8_10, kernel-rt-kvm 4.18.0-553.147.1.rt7.488.el8_10, kernel-rt-core 4.18.0-553.147.1.rt7.488.el8_10, kernel-rt-modules 4.18.0-553.147.1.rt7.488.el8_10, kernel-rt-debug-kvm 4.18.0-553.147.1.rt7.488.el8_10, kernel-rt-debug-core 4.18.0-553.147.1.rt7.488.el8_10, +4 more
    fixed: vendor fix RHSA-2026:45116
  • Red Hat Enterprise Linux Real Time (v. 9) kernel-rt 5.14.0-687.33.1.el9_8, kernel-rt-64k 5.14.0-687.33.1.el9_8, kernel-rt-core 5.14.0-687.33.1.el9_8, kernel-rt-modules 5.14.0-687.33.1.el9_8, kernel-rt-64k-core 5.14.0-687.33.1.el9_8, kernel-rt-debug-core 5.14.0-687.33.1.el9_8, +14 more
    fixed: vendor fix RHSA-2026:49212
  • Red Hat Enterprise Linux Real Time (v. 10) kernel-rt 6.12.0-211.40.1.el10_2, kernel-rt-64k 6.12.0-211.40.1.el10_2, kernel-rt-core 6.12.0-211.40.1.el10_2, kernel-rt-modules 6.12.0-211.40.1.el10_2, kernel-rt-64k-core 6.12.0-211.40.1.el10_2, kernel-rt-debug-core 6.12.0-211.40.1.el10_2, +14 more
    fixed: vendor fix RHSA-2026:47017
  • Red Hat Enterprise Linux Real Time E4S (v.9.2) kernel-rt 5.14.0-284.193.1.rt14.478.el9_2, kernel-rt-core 5.14.0-284.193.1.rt14.478.el9_2, kernel-rt-modules 5.14.0-284.193.1.rt14.478.el9_2, kernel-rt-debug-core 5.14.0-284.193.1.rt14.478.el9_2, kernel-rt-modules-core 5.14.0-284.193.1.rt14.478.el9_2, kernel-rt-debug-modules 5.14.0-284.193.1.rt14.478.el9_2, +4 more
    fixed: vendor fix RHSA-2026:70483
  • Red Hat Enterprise Linux Real Time E4S (v.9.4) kernel-rt 5.14.0-427.153.1.el9_4, kernel-rt-core 5.14.0-427.153.1.el9_4, kernel-rt-modules 5.14.0-427.153.1.el9_4, kernel-rt-debug-core 5.14.0-427.153.1.el9_4, kernel-rt-modules-core 5.14.0-427.153.1.el9_4, kernel-rt-debug-modules 5.14.0-427.153.1.el9_4, +4 more
    fixed: vendor fix RHSA-2026:73645
  • Red Hat Enterprise Linux Real Time EUS (v. 10.0) kernel-rt 6.12.0-55.108.1.el10_0, kernel-rt-64k 6.12.0-55.108.1.el10_0, kernel-rt-core 6.12.0-55.108.1.el10_0, kernel-rt-modules 6.12.0-55.108.1.el10_0, kernel-rt-64k-core 6.12.0-55.108.1.el10_0, kernel-rt-debug-core 6.12.0-55.108.1.el10_0, +14 more
    fixed: vendor fix RHSA-2026:75560
  • Red Hat Enterprise Linux Real Time EUS (v.9.6) kernel-rt 5.14.0-570.146.1.el9_6, kernel-rt-64k 5.14.0-570.146.1.el9_6, kernel-rt-core 5.14.0-570.146.1.el9_6, kernel-rt-modules 5.14.0-570.146.1.el9_6, kernel-rt-64k-core 5.14.0-570.146.1.el9_6, kernel-rt-debug-core 5.14.0-570.146.1.el9_6, +14 more
    fixed: vendor fix RHSA-2026:74174
  • Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt 5.14.0-687.33.1.el9_8, kernel-rt-core 5.14.0-687.33.1.el9_8, kernel-rt-modules 5.14.0-687.33.1.el9_8, kernel-rt-debug-core 5.14.0-687.33.1.el9_8, kernel-rt-modules-core 5.14.0-687.33.1.el9_8, kernel-rt-debug-modules 5.14.0-687.33.1.el9_8, +4 more
    fixed: vendor fix RHSA-2026:49212
  • Red Hat Enterprise Linux Real Time for NFV (v. 10) kernel-rt 6.12.0-211.40.1.el10_2, kernel-rt-core 6.12.0-211.40.1.el10_2, kernel-rt-modules 6.12.0-211.40.1.el10_2, kernel-rt-debug-core 6.12.0-211.40.1.el10_2, kernel-rt-modules-core 6.12.0-211.40.1.el10_2, kernel-rt-debug-modules 6.12.0-211.40.1.el10_2, +4 more
    fixed: vendor fix RHSA-2026:47017
  • Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2) kernel-rt 5.14.0-284.193.1.rt14.478.el9_2, kernel-rt-kvm 5.14.0-284.193.1.rt14.478.el9_2, kernel-rt-core 5.14.0-284.193.1.rt14.478.el9_2, kernel-rt-modules 5.14.0-284.193.1.rt14.478.el9_2, kernel-rt-debug-kvm 5.14.0-284.193.1.rt14.478.el9_2, kernel-rt-debug-core 5.14.0-284.193.1.rt14.478.el9_2, +6 more
    fixed: vendor fix RHSA-2026:70483
  • Red Hat Enterprise Linux Real Time for NFV E4S (v.9.4) kernel-rt 5.14.0-427.153.1.el9_4, kernel-rt-kvm 5.14.0-427.153.1.el9_4, kernel-rt-core 5.14.0-427.153.1.el9_4, kernel-rt-modules 5.14.0-427.153.1.el9_4, kernel-rt-debug-kvm 5.14.0-427.153.1.el9_4, kernel-rt-debug-core 5.14.0-427.153.1.el9_4, +6 more
    fixed: vendor fix RHSA-2026:73645
  • Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0) kernel-rt 6.12.0-55.108.1.el10_0, kernel-rt-kvm 6.12.0-55.108.1.el10_0, kernel-rt-core 6.12.0-55.108.1.el10_0, kernel-rt-modules 6.12.0-55.108.1.el10_0, kernel-rt-debug-kvm 6.12.0-55.108.1.el10_0, kernel-rt-debug-core 6.12.0-55.108.1.el10_0, +6 more
    fixed: vendor fix RHSA-2026:75560
  • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.6) kernel-rt 5.14.0-570.146.1.el9_6, kernel-rt-kvm 5.14.0-570.146.1.el9_6, kernel-rt-core 5.14.0-570.146.1.el9_6, kernel-rt-modules 5.14.0-570.146.1.el9_6, kernel-rt-debug-kvm 5.14.0-570.146.1.el9_6, kernel-rt-debug-core 5.14.0-570.146.1.el9_6, +6 more
    fixed: vendor fix RHSA-2026:74174
  • Red Hat Enterprise Linux RT (v. 8) kernel-rt 4.18.0-553.147.1.rt7.488.el8_10, kernel-rt-core 4.18.0-553.147.1.rt7.488.el8_10, kernel-rt-modules 4.18.0-553.147.1.rt7.488.el8_10, kernel-rt-debug-core 4.18.0-553.147.1.rt7.488.el8_10, kernel-rt-debug-modules 4.18.0-553.147.1.rt7.488.el8_10, kernel-rt-modules-extra 4.18.0-553.147.1.rt7.488.el8_10, +2 more
    fixed: vendor fix RHSA-2026:45116
  • Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more
    not affected: vulnerable code not present

1 more not affected in the full advisory

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
total
Assessed
24 d ago

Exploit prediction

0.40% chance of exploitation in the next 30 days, higher than 34% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADP 3.1 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Linux Linux
  • Red Hat Red Hat Enterprise Linux 10
  • Red Hat Red Hat Enterprise Linux 8
  • Red Hat Red Hat Enterprise Linux 9
  • Red Hat Red Hat Enterprise Linux 6
  • Red Hat Red Hat Enterprise Linux 7

Classification

Weakness
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.