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Fencer Vulns
medium 5.5

CVE-2026-31684 json

net: sched: act_csum: validate nested VLAN headers

published 2026-04-25 6 mo ago modified 2026-11-06 3 d ago also EUVD-2026-25651

cvss
5.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.1%
EPSS 0.1% chance of exploitation in 30 days, percentile 1%
public exploits
0
none known

Summary

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

net: sched: act_csum: validate nested VLAN headers

tcf_csum_act() walks nested VLAN headers directly from skb->data when an skb still carries in-payload VLAN tags. The current code reads vlan->h_vlan_encapsulated_proto and then pulls VLAN_HLEN bytes without first ensuring that the full VLAN header is present in the linear area.

If only part of an inner VLAN header is linearized, accessing h_vlan_encapsulated_proto reads past the linear area, and the following skb_pull(VLAN_HLEN) may violate skb invariants.

Fix this by requiring pskb_may_pull(skb, VLAN_HLEN) before accessing and pulling each nested VLAN header. If the header still is not fully available, drop the packet through the existing error path.

Patch / fix

  • Linux Linux 4.20, 5.10.258, 5.15.209, 6.1.175, 6.6.136, 6.12.83, 6.18.24, 6.19.14, 7.0
  • linux Debian 12 6.1.176-1
  • linux Debian 13 6.12.85-1
  • linux Debian 14 6.19.14-1

debian advisories DEBIAN-CVE-2026-31684

  • linux Ubuntu 22.04 LTS 5.15.0-186.196
  • linux Ubuntu 24.04 LTS 6.8.0-136.136
  • linux-aws Ubuntu 22.04 LTS 5.15.0-1112.119
  • linux-aws Ubuntu 24.04 LTS 6.8.0-1061.64
  • linux-gcp Ubuntu 22.04 LTS 5.15.0-1112.122
  • linux-gcp Ubuntu 24.04 LTS 6.8.0-1064.72
  • linux-gke Ubuntu 22.04 LTS 5.15.0-1108.114
  • linux-gke Ubuntu 24.04 LTS 6.8.0-1059.67

ubuntu advisories UBUNTU-CVE-2026-31684

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-rt RHEL 8 4.18.0-553.126.1.rt7.467.el8_10
  • kernel-rt-kvm RHEL 8 4.18.0-553.126.1.rt7.467.el8_10
  • kernel-rt-core RHEL 8 4.18.0-553.126.1.rt7.467.el8_10
  • kernel-rt-modules RHEL 8 4.18.0-553.126.1.rt7.467.el8_10
  • kernel-rt-debug-kvm RHEL 8 4.18.0-553.126.1.rt7.467.el8_10
  • kernel-rt-debug-core RHEL 8 4.18.0-553.126.1.rt7.467.el8_10
  • kernel-rt-debug-modules RHEL 8 4.18.0-553.126.1.rt7.467.el8_10
  • kernel-rt-modules-extra RHEL 8 4.18.0-553.126.1.rt7.467.el8_10

red hat advisories RHSA-2026:47869RHSA-2026:47739RHSA-2026:47633RHSA-2026:47632RHSA-2026:44694RHSA-2026:44385

  • kernel-64kb SLE Module for Basesystem 15 SP7 6.4.0-150700.53.55.1
  • kernel-syms SLE Module for Development Tools 15 SP7 6.4.0-150700.53.55.1
  • kernel-azure SLE Module for Public Cloud 15 SP7 6.4.0-150700.53.55.1
  • kernel-source SLE Module for Development Tools 15 SP7, SLE Module for Basesystem 15 SP7 6.4.0-150700.53.55.1
  • kernel-default SLE Workstation Extension 15 SP7, SLE Module for Legacy 15 SP7, SLE Module for Basesystem 15 SP7 +2 more 6.4.0-150700.53.55.1
  • kernel-zfcpdump SLE Module for Basesystem 15 SP7 6.4.0-150700.53.55.1
  • kernel-obs-build SLE Module for Development Tools 15 SP7 6.4.0-150700.53.55.1
  • kernel-default-base SLE Module for Basesystem 15 SP7 6.4.0-150700.53.55.1.150700.17.33.1

suse advisories SUSE-SU-2026:2238-1SUSE-SU-2026:21834-1

  • kernel AlmaLinux 9 5.14.0-687.12.1.el9_8
  • rv AlmaLinux 9 5.14.0-687.12.1.el9_8
  • perf AlmaLinux 9 5.14.0-687.12.1.el9_8
  • rtla AlmaLinux 9 5.14.0-687.12.1.el9_8
  • libperf AlmaLinux 9 5.14.0-687.12.1.el9_8
  • kernel-rt AlmaLinux 9 5.14.0-687.12.1.el9_8
  • kernel-64k AlmaLinux 9 5.14.0-687.12.1.el9_8
  • kernel-core AlmaLinux 9 5.14.0-687.12.1.el9_8

almalinux advisories ALSA-2026:21556ALSA-2026:21557ALSA-2026:21706ALSA-2026:21745

  • kernel Rocky Linux 10 6.12.0-211.18.1.el10_2
  • kernel-rt Rocky Linux 8 4.18.0-553.126.1.rt7.467.el8_10
  • kernel Rocky Linux 8 4.18.0-553.126.1.el8_10
  • kernel Rocky Linux 9 5.14.0-687.12.1.el9_8

rocky linux advisories RLSA-2026:21557RLSA-2026:21745RLSA-2026:21706RLSA-2026:21556

  • kernel Azure Linux 3.0 6.6.137.1-1

azure linux advisories AZL-84222

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

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-2026-31684 updated cvss 7.1

kernel: net: sched: act_csum: validate nested VLAN headers

  • 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 5.14.0-570.129.1.el9_6, kernel-debuginfo-common-s390x 5.14.0-570.129.1.el9_6, kernel-debuginfo-common-x86_64 5.14.0-570.129.1.el9_6, kernel-debuginfo-common-aarch64 5.14.0-570.129.1.el9_6, kernel-debuginfo-common-ppc64le 5.14.0-570.129.1.el9_6
    fixed: vendor fix RHSA-2026:44385
  • Red Hat Enterprise Linux AppStream (v. 9) rv 5.14.0-687.12.1.el9_8, perf 5.14.0-687.12.1.el9_8, rtla 5.14.0-687.12.1.el9_8, python3-perf 5.14.0-687.12.1.el9_8, kernel-devel-matched 5.14.0-687.12.1.el9_8, kernel-64k-devel-matched 5.14.0-687.12.1.el9_8, +7 more
    fixed: vendor fix RHSA-2026:21556
  • Red Hat Enterprise Linux AppStream (v. 10) rv 6.12.0-211.18.1.el10_2, perf 6.12.0-211.18.1.el10_2, rtla 6.12.0-211.18.1.el10_2, python3-perf 6.12.0-211.18.1.el10_2, kernel-devel-matched 6.12.0-211.18.1.el10_2, kernel-64k-devel-matched 6.12.0-211.18.1.el10_2, +7 more
    fixed: vendor fix RHSA-2026:21557
  • Red Hat Enterprise Linux AppStream E4S (v.9.2) perf 5.14.0-284.183.1.el9_2, rtla 5.14.0-284.183.1.el9_2, kernel-devel-matched 5.14.0-284.183.1.el9_2, kernel-64k-devel-matched 5.14.0-284.183.1.el9_2, kernel-debug-devel-matched 5.14.0-284.183.1.el9_2, kernel-debuginfo-common-s390x 5.14.0-284.183.1.el9_2, +5 more
    fixed: vendor fix RHSA-2026:47739
  • Red Hat Enterprise Linux AppStream E4S (v.9.4) rv 5.14.0-427.139.1.el9_4, perf 5.14.0-427.139.1.el9_4, rtla 5.14.0-427.139.1.el9_4, kernel-devel-matched 5.14.0-427.139.1.el9_4, kernel-64k-devel-matched 5.14.0-427.139.1.el9_4, kernel-debug-devel-matched 5.14.0-427.139.1.el9_4, +6 more
    fixed: vendor fix RHSA-2026:43231
  • Red Hat Enterprise Linux AppStream EUS (v. 10.0) rv 6.12.0-55.92.1.el10_0, perf 6.12.0-55.92.1.el10_0, rtla 6.12.0-55.92.1.el10_0, python3-perf 6.12.0-55.92.1.el10_0, kernel-devel-matched 6.12.0-55.92.1.el10_0, kernel-64k-devel-matched 6.12.0-55.92.1.el10_0, +7 more
    fixed: vendor fix RHSA-2026:44694
  • Red Hat Enterprise Linux AppStream EUS (v.9.6) rv 5.14.0-570.129.1.el9_6, perf 5.14.0-570.129.1.el9_6, rtla 5.14.0-570.129.1.el9_6, python3-perf 5.14.0-570.129.1.el9_6, kernel-devel-matched 5.14.0-570.129.1.el9_6, kernel-64k-devel-matched 5.14.0-570.129.1.el9_6, +7 more
    fixed: vendor fix RHSA-2026:44385
show 32 more
  • Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-553.126.1.el8_10, kernel 4.18.0-553.126.1.el8_10, bpftool 4.18.0-553.126.1.el8_10, kernel-core 4.18.0-553.126.1.el8_10, kernel-tools 4.18.0-553.126.1.el8_10, python3-perf 4.18.0-553.126.1.el8_10, +15 more
    fixed: vendor fix RHSA-2026:21706
  • Red Hat Enterprise Linux BaseOS (v. 9) kernel 5.14.0-687.12.1.el9_8, kernel-64k 5.14.0-687.12.1.el9_8, kernel-core 5.14.0-687.12.1.el9_8, kernel-tools 5.14.0-687.12.1.el9_8, kernel-modules 5.14.0-687.12.1.el9_8, kernel-64k-core 5.14.0-687.12.1.el9_8, +27 more
    fixed: vendor fix RHSA-2026:21556
  • Red Hat Enterprise Linux BaseOS (v. 10) kernel 6.12.0-211.18.1.el10_2, kernel-64k 6.12.0-211.18.1.el10_2, kernel-core 6.12.0-211.18.1.el10_2, kernel-tools 6.12.0-211.18.1.el10_2, kernel-modules 6.12.0-211.18.1.el10_2, kernel-64k-core 6.12.0-211.18.1.el10_2, +28 more
    fixed: vendor fix RHSA-2026:21557
  • Red Hat Enterprise Linux BaseOS AUS (v.8.4) perf 4.18.0-305.199.1.el8_4, kernel 4.18.0-305.199.1.el8_4, bpftool 4.18.0-305.199.1.el8_4, kernel-core 4.18.0-305.199.1.el8_4, kernel-tools 4.18.0-305.199.1.el8_4, python3-perf 4.18.0-305.199.1.el8_4, +8 more
    fixed: vendor fix RHSA-2026:47633
  • Red Hat Enterprise Linux BaseOS AUS (v.8.6) perf 4.18.0-372.201.1.el8_6, kernel 4.18.0-372.201.1.el8_6, bpftool 4.18.0-372.201.1.el8_6, kernel-core 4.18.0-372.201.1.el8_6, kernel-tools 4.18.0-372.201.1.el8_6, python3-perf 4.18.0-372.201.1.el8_6, +8 more
    fixed: vendor fix RHSA-2026:40068
  • Red Hat Enterprise Linux BaseOS E4S (v.8.8) perf 4.18.0-477.156.1.el8_8, kernel 4.18.0-477.156.1.el8_8, bpftool 4.18.0-477.156.1.el8_8, kernel-core 4.18.0-477.156.1.el8_8, kernel-tools 4.18.0-477.156.1.el8_8, python3-perf 4.18.0-477.156.1.el8_8, +9 more
    fixed: vendor fix RHSA-2026:47869
  • Red Hat Enterprise Linux BaseOS E4S (v.9.2) bpftool 7.0.0-284.183.1.el9_2, kernel 5.14.0-284.183.1.el9_2, kernel-64k 5.14.0-284.183.1.el9_2, kernel-core 5.14.0-284.183.1.el9_2, kernel-tools 5.14.0-284.183.1.el9_2, python3-perf 5.14.0-284.183.1.el9_2, +28 more
    fixed: vendor fix RHSA-2026:47739
  • Red Hat Enterprise Linux BaseOS E4S (v.9.4) bpftool 7.3.0-427.139.1.el9_4, kernel 5.14.0-427.139.1.el9_4, kernel-64k 5.14.0-427.139.1.el9_4, kernel-core 5.14.0-427.139.1.el9_4, kernel-tools 5.14.0-427.139.1.el9_4, python3-perf 5.14.0-427.139.1.el9_4, +28 more
    fixed: vendor fix RHSA-2026:43231
  • Red Hat Enterprise Linux BaseOS EUS (v. 10.0) kernel 6.12.0-55.92.1.el10_0, kernel-64k 6.12.0-55.92.1.el10_0, kernel-core 6.12.0-55.92.1.el10_0, kernel-tools 6.12.0-55.92.1.el10_0, kernel-modules 6.12.0-55.92.1.el10_0, kernel-64k-core 6.12.0-55.92.1.el10_0, +27 more
    fixed: vendor fix RHSA-2026:44694
  • Red Hat Enterprise Linux BaseOS EUS (v.9.6) kernel 5.14.0-570.129.1.el9_6, kernel-64k 5.14.0-570.129.1.el9_6, kernel-core 5.14.0-570.129.1.el9_6, kernel-tools 5.14.0-570.129.1.el9_6, kernel-modules 5.14.0-570.129.1.el9_6, kernel-64k-core 5.14.0-570.129.1.el9_6, +27 more
    fixed: vendor fix RHSA-2026:44385
  • Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4) perf 4.18.0-305.199.1.el8_4, kernel 4.18.0-305.199.1.el8_4, bpftool 4.18.0-305.199.1.el8_4, kernel-core 4.18.0-305.199.1.el8_4, kernel-tools 4.18.0-305.199.1.el8_4, python3-perf 4.18.0-305.199.1.el8_4, +8 more
    fixed: vendor fix RHSA-2026:47633
  • Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6) perf 4.18.0-372.201.1.el8_6, kernel 4.18.0-372.201.1.el8_6, bpftool 4.18.0-372.201.1.el8_6, kernel-core 4.18.0-372.201.1.el8_6, kernel-tools 4.18.0-372.201.1.el8_6, python3-perf 4.18.0-372.201.1.el8_6, +8 more
    fixed: vendor fix RHSA-2026:40068
  • Red Hat Enterprise Linux BaseOS TUS (v.8.8) perf 4.18.0-477.156.1.el8_8, kernel 4.18.0-477.156.1.el8_8, bpftool 4.18.0-477.156.1.el8_8, kernel-core 4.18.0-477.156.1.el8_8, kernel-tools 4.18.0-477.156.1.el8_8, python3-perf 4.18.0-477.156.1.el8_8, +8 more
    fixed: vendor fix RHSA-2026:47869
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) libperf 5.14.0-687.12.1.el9_8, kernel-debuginfo-common-s390x 5.14.0-687.12.1.el9_8, kernel-debuginfo-common-x86_64 5.14.0-687.12.1.el9_8, kernel-debuginfo-common-aarch64 5.14.0-687.12.1.el9_8, kernel-debuginfo-common-ppc64le 5.14.0-687.12.1.el9_8
    fixed: vendor fix RHSA-2026:21556
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) libperf 6.12.0-211.18.1.el10_2, kernel-debuginfo-common-s390x 6.12.0-211.18.1.el10_2, kernel-debuginfo-common-x86_64 6.12.0-211.18.1.el10_2, kernel-debuginfo-common-aarch64 6.12.0-211.18.1.el10_2, kernel-debuginfo-common-ppc64le 6.12.0-211.18.1.el10_2
    fixed: vendor fix RHSA-2026:21557
  • Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) libperf 6.12.0-55.92.1.el10_0, kernel-debuginfo-common-s390x 6.12.0-55.92.1.el10_0, kernel-debuginfo-common-x86_64 6.12.0-55.92.1.el10_0, kernel-debuginfo-common-aarch64 6.12.0-55.92.1.el10_0, kernel-debuginfo-common-ppc64le 6.12.0-55.92.1.el10_0
    fixed: vendor fix RHSA-2026:44694
  • Red Hat Enterprise Linux CRB (v. 8) kernel-debuginfo-common-x86_64 4.18.0-553.126.1.el8_10, kernel-debuginfo-common-aarch64 4.18.0-553.126.1.el8_10, kernel-debuginfo-common-ppc64le 4.18.0-553.126.1.el8_10
    fixed: vendor fix RHSA-2026:21706
  • Red Hat Enterprise Linux for Real Time (v. 7 ELS) kernel-rt 3.10.0-1160.156.1.rt56.1308.el7, kernel-rt-trace 3.10.0-1160.156.1.rt56.1308.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-1160.156.1.rt56.1308.el7
    fixed: vendor fix RHSA-2026:41234
  • Red Hat Enterprise Linux NFV (v. 8) kernel-rt 4.18.0-553.126.1.rt7.467.el8_10, kernel-rt-kvm 4.18.0-553.126.1.rt7.467.el8_10, kernel-rt-core 4.18.0-553.126.1.rt7.467.el8_10, kernel-rt-modules 4.18.0-553.126.1.rt7.467.el8_10, kernel-rt-debug-kvm 4.18.0-553.126.1.rt7.467.el8_10, kernel-rt-debug-core 4.18.0-553.126.1.rt7.467.el8_10, +4 more
    fixed: vendor fix RHSA-2026:21745
  • Red Hat Enterprise Linux Real Time (v. 9) kernel-rt 5.14.0-687.12.1.el9_8, kernel-rt-64k 5.14.0-687.12.1.el9_8, kernel-rt-core 5.14.0-687.12.1.el9_8, kernel-rt-modules 5.14.0-687.12.1.el9_8, kernel-rt-64k-core 5.14.0-687.12.1.el9_8, kernel-rt-debug-core 5.14.0-687.12.1.el9_8, +14 more
    fixed: vendor fix RHSA-2026:21556
  • Red Hat Enterprise Linux Real Time (v. 10) kernel-rt 6.12.0-211.18.1.el10_2, kernel-rt-64k 6.12.0-211.18.1.el10_2, kernel-rt-core 6.12.0-211.18.1.el10_2, kernel-rt-modules 6.12.0-211.18.1.el10_2, kernel-rt-64k-core 6.12.0-211.18.1.el10_2, kernel-rt-debug-core 6.12.0-211.18.1.el10_2, +14 more
    fixed: vendor fix RHSA-2026:21557
  • Red Hat Enterprise Linux Real Time E4S (v.9.2) kernel-rt 5.14.0-284.183.1.rt14.468.el9_2, kernel-rt-core 5.14.0-284.183.1.rt14.468.el9_2, kernel-rt-modules 5.14.0-284.183.1.rt14.468.el9_2, kernel-rt-debug-core 5.14.0-284.183.1.rt14.468.el9_2, kernel-rt-modules-core 5.14.0-284.183.1.rt14.468.el9_2, kernel-rt-debug-modules 5.14.0-284.183.1.rt14.468.el9_2, +4 more
    fixed: vendor fix RHSA-2026:47632
  • Red Hat Enterprise Linux Real Time E4S (v.9.4) kernel-rt 5.14.0-427.139.1.el9_4, kernel-rt-core 5.14.0-427.139.1.el9_4, kernel-rt-modules 5.14.0-427.139.1.el9_4, kernel-rt-debug-core 5.14.0-427.139.1.el9_4, kernel-rt-modules-core 5.14.0-427.139.1.el9_4, kernel-rt-debug-modules 5.14.0-427.139.1.el9_4, +4 more
    fixed: vendor fix RHSA-2026:43231
  • Red Hat Enterprise Linux Real Time EUS (v. 10.0) kernel-rt 6.12.0-55.92.1.el10_0, kernel-rt-64k 6.12.0-55.92.1.el10_0, kernel-rt-core 6.12.0-55.92.1.el10_0, kernel-rt-modules 6.12.0-55.92.1.el10_0, kernel-rt-64k-core 6.12.0-55.92.1.el10_0, kernel-rt-debug-core 6.12.0-55.92.1.el10_0, +14 more
    fixed: vendor fix RHSA-2026:44694
  • Red Hat Enterprise Linux Real Time EUS (v.9.6) kernel-rt 5.14.0-570.129.1.el9_6, kernel-rt-64k 5.14.0-570.129.1.el9_6, kernel-rt-core 5.14.0-570.129.1.el9_6, kernel-rt-modules 5.14.0-570.129.1.el9_6, kernel-rt-64k-core 5.14.0-570.129.1.el9_6, kernel-rt-debug-core 5.14.0-570.129.1.el9_6, +14 more
    fixed: vendor fix RHSA-2026:44385
  • Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt 5.14.0-687.12.1.el9_8, kernel-rt-core 5.14.0-687.12.1.el9_8, kernel-rt-modules 5.14.0-687.12.1.el9_8, kernel-rt-debug-core 5.14.0-687.12.1.el9_8, kernel-rt-modules-core 5.14.0-687.12.1.el9_8, kernel-rt-debug-modules 5.14.0-687.12.1.el9_8, +4 more
    fixed: vendor fix RHSA-2026:21556
  • Red Hat Enterprise Linux Real Time for NFV (v. 10) kernel-rt 6.12.0-211.18.1.el10_2, kernel-rt-core 6.12.0-211.18.1.el10_2, kernel-rt-modules 6.12.0-211.18.1.el10_2, kernel-rt-debug-core 6.12.0-211.18.1.el10_2, kernel-rt-modules-core 6.12.0-211.18.1.el10_2, kernel-rt-debug-modules 6.12.0-211.18.1.el10_2, +4 more
    fixed: vendor fix RHSA-2026:21557
  • Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2) kernel-rt 5.14.0-284.183.1.rt14.468.el9_2, kernel-rt-kvm 5.14.0-284.183.1.rt14.468.el9_2, kernel-rt-core 5.14.0-284.183.1.rt14.468.el9_2, kernel-rt-modules 5.14.0-284.183.1.rt14.468.el9_2, kernel-rt-debug-kvm 5.14.0-284.183.1.rt14.468.el9_2, kernel-rt-debug-core 5.14.0-284.183.1.rt14.468.el9_2, +6 more
    fixed: vendor fix RHSA-2026:47632
  • Red Hat Enterprise Linux Real Time for NFV E4S (v.9.4) kernel-rt 5.14.0-427.139.1.el9_4, kernel-rt-kvm 5.14.0-427.139.1.el9_4, kernel-rt-core 5.14.0-427.139.1.el9_4, kernel-rt-modules 5.14.0-427.139.1.el9_4, kernel-rt-debug-kvm 5.14.0-427.139.1.el9_4, kernel-rt-debug-core 5.14.0-427.139.1.el9_4, +6 more
    fixed: vendor fix RHSA-2026:43231
  • Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0) kernel-rt 6.12.0-55.92.1.el10_0, kernel-rt-kvm 6.12.0-55.92.1.el10_0, kernel-rt-core 6.12.0-55.92.1.el10_0, kernel-rt-modules 6.12.0-55.92.1.el10_0, kernel-rt-debug-kvm 6.12.0-55.92.1.el10_0, kernel-rt-debug-core 6.12.0-55.92.1.el10_0, +6 more
    fixed: vendor fix RHSA-2026:44694
  • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.6) kernel-rt 5.14.0-570.129.1.el9_6, kernel-rt-kvm 5.14.0-570.129.1.el9_6, kernel-rt-core 5.14.0-570.129.1.el9_6, kernel-rt-modules 5.14.0-570.129.1.el9_6, kernel-rt-debug-kvm 5.14.0-570.129.1.el9_6, kernel-rt-debug-core 5.14.0-570.129.1.el9_6, +6 more
    fixed: vendor fix RHSA-2026:44385
  • Red Hat Enterprise Linux RT (v. 8) kernel-rt 4.18.0-553.126.1.rt7.467.el8_10, kernel-rt-core 4.18.0-553.126.1.rt7.467.el8_10, kernel-rt-modules 4.18.0-553.126.1.rt7.467.el8_10, kernel-rt-debug-core 4.18.0-553.126.1.rt7.467.el8_10, kernel-rt-debug-modules 4.18.0-553.126.1.rt7.467.el8_10, kernel-rt-modules-extra 4.18.0-553.126.1.rt7.467.el8_10, +2 more
    fixed: vendor fix RHSA-2026:21745

2 more fixed, 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
no
Technical impact
partial
Assessed
3 d ago

Exploit prediction

0.12% chance of exploitation in the next 30 days, higher than 1% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

  • Linux Linux

Classification

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.