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Fencer Vulns
high 7.8

CVE-2026-74582 json

packet: use consistent hard_header_len in non-ring send paths

published 2026-08-21 2 mo ago modified 2026-10-16 23 d ago also EUVD-2026-64004

cvss
7.8
version 3.1, CNA
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:

packet: use consistent hard_header_len in non-ring send paths

packet_snd() reads dev->hard_header_len multiple times while allocating and constructing an skb. Device reconfiguration can change this value concurrently, for example through bonding device type changes.

For SOCK_RAW, packet_snd() can save a larger value in reserve and later allocate headroom using a smaller value. Moving skb->data back by reserve then places it before skb->head, and the following copy from userspace can attempt an out-of-bounds write.

packet_sendmsg_spkt() has the same issue because it calculates its reservation and header offset from separate reads before dropping the RCU read lock to allocate the skb.

Add LL_RESERVED_SPACE_EX() for callers that already saved a header length. Read hard_header_len once in packet_snd() and use it for allocation and construction. In packet_sendmsg_spkt(), preserve the allocation-time value through the device lookup retry.

The separate SOCK_DGRAM consistency problem between hard_header_len and header_ops->create is not addressed here.

Patch / fix

  • Linux Linux 4.5, 4.10, 4.15, 4.17, 5.10.267, 5.15.218, 6.1.185, 6.6.152, 6.12.104, 6.18.45, 7.1.9, 7.2
  • linux Debian 12 6.1.187-1
  • linux Debian 13 6.12.105-1
  • linux Debian 14 7.1.9-1
  • linux-6.12 Debian 12 6.12.107-1~deb12u1

debian advisories DEBIAN-CVE-2026-74582

  • linux Ubuntu 22.04 LTS 5.15.0-202.212
  • linux Ubuntu 26.04 LTS 7.0.0-42.42
  • linux-aws Ubuntu 22.04 LTS 5.15.0-1119.126
  • linux-aws Ubuntu 26.04 LTS 7.0.0-1016.17
  • linux-gcp Ubuntu 22.04 LTS 5.15.0-1120.130
  • linux-gcp Ubuntu 26.04 LTS 7.0.0-1016.18
  • linux-gke Ubuntu 22.04 LTS 5.15.0-1115.121
  • linux-ibm Ubuntu 22.04 LTS 5.15.0-1113.117

ubuntu advisories UBUNTU-CVE-2026-74582

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 4.18.0-553.172.1.rt7.513.el8_10
  • kernel-rt-kvm RHEL 8 4.18.0-553.172.1.rt7.513.el8_10
  • kernel-rt-core RHEL 8 4.18.0-553.172.1.rt7.513.el8_10
  • kernel-rt-modules RHEL 8 4.18.0-553.172.1.rt7.513.el8_10
  • kernel-rt-debug-kvm RHEL 8 4.18.0-553.172.1.rt7.513.el8_10
  • kernel-rt-debug-core RHEL 8 4.18.0-553.172.1.rt7.513.el8_10
  • kernel-rt-debug-modules RHEL 8 4.18.0-553.172.1.rt7.513.el8_10
  • kernel-rt-modules-extra RHEL 8 4.18.0-553.172.1.rt7.513.el8_10

red hat advisories RHSA-2026:77500RHSA-2026:77498RHSA-2026:67723RHSA-2026:67721RHSA-2026:65711RHSA-2026:65710

  • kernel-64kb SLES 15 SP5-LTSS, SLE High Performance Computing 15 SP5-LTSS, SLE High Performance Computing 15 SP5-ESPOS 5.14.21-150500.55.189.1
  • kernel-syms SLES for SAP 15 SP5, SLES 15 SP5-LTSS, SLE High Performance Computing 15 SP5-LTSS +1 more 5.14.21-150500.55.189.1
  • kernel-source SLES for SAP 15 SP5, SLES 15 SP5-LTSS, SLE Micro 5.5 +2 more 5.14.21-150500.55.189.1
  • kernel-default SLES for SAP 15 SP5, SLES 15 SP5-LTSS, SLE Micro 5.5 +3 more 5.14.21-150500.55.189.1
  • kernel-obs-build SLES for SAP 15 SP5, SLES 15 SP5-LTSS, SLE High Performance Computing 15 SP5-LTSS +1 more 5.14.21-150500.55.189.1
  • kernel-default-base SLES for SAP 15 SP5, SLES 15 SP5-LTSS, SLE Micro 5.5 +2 more 5.14.21-150500.55.189.1.150500.6.87.4
  • kernel-64kb SLE Module for Basesystem 15 SP7 6.4.0-150700.53.81.1
  • kernel-syms SLE Module for Development Tools 15 SP7 6.4.0-150700.53.81.1

suse advisories SUSE-SU-2026:4595-1SUSE-SU-2026:4254-1SUSE-SU-2026:4369-1SUSE-SU-2026:4347-1SUSE-SU-2026:4284-1SUSE-SU-2026:23887-1

  • kernel-rt openSUSE Leap 16.0 6.12.0-160000.38.1
  • dtb-aarch64 openSUSE Leap 16.0 6.12.0-160000.38.1
  • kernel-64kb openSUSE Leap 16.0 6.12.0-160000.38.1
  • kernel-syms openSUSE Leap 16.0 6.12.0-160000.38.1
  • kernel-azure openSUSE Leap 16.0 6.12.0-160000.38.1
  • kernel-obs-qa openSUSE Leap 16.0 6.12.0-160000.38.1
  • kernel-source openSUSE Leap 16.0 6.12.0-160000.38.1
  • kernel-default openSUSE Leap 16.0 6.12.0-160000.38.1

opensuse advisories openSUSE-SU-2026:21910-1

  • kernel AlmaLinux 8 4.18.0-553.172.1.el8_10
  • perf AlmaLinux 8 4.18.0-553.172.1.el8_10
  • bpftool AlmaLinux 8 4.18.0-553.172.1.el8_10
  • kernel-core AlmaLinux 8 4.18.0-553.172.1.el8_10
  • kernel-tools AlmaLinux 8 4.18.0-553.172.1.el8_10
  • python3-perf AlmaLinux 8 4.18.0-553.172.1.el8_10
  • kernel-modules AlmaLinux 8 4.18.0-553.172.1.el8_10
  • kernel-zfcpdump AlmaLinux 8 4.18.0-553.172.1.el8_10

almalinux advisories ALSA-2026:77498ALSA-2026:77500ALSA-2026:76738

  • kernel Rocky Linux 9 5.14.0-687.64.1.el9_8
  • kernel-rt Rocky Linux 8 4.18.0-553.172.1.rt7.513.el8_10
  • kernel Rocky Linux 8 4.18.0-553.172.1.el8_10

rocky linux advisories RLSA-2026:93412RLSA-2026:77500RLSA-2026:77498

  • kernel Azure Linux 3.0 6.6.152.1-1

azure linux advisories AZL-96995

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-2026-74582 updated cvss 7.8

kernel: packet: use consistent hard_header_len in non-ring send paths

  • 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 5.14.0-570.136.1.el9_6, kernel-debuginfo-common-s390x 5.14.0-570.136.1.el9_6, kernel-debuginfo-common-x86_64 5.14.0-570.136.1.el9_6, kernel-debuginfo-common-aarch64 5.14.0-570.136.1.el9_6, kernel-debuginfo-common-ppc64le 5.14.0-570.136.1.el9_6
    fixed: vendor fix RHSA-2026:60486
  • Red Hat Enterprise Linux kernel-modules-internal 6.12.0-211.63.1.el10_2
    fixed: vendor fix RHSA-2026:76738
  • Red Hat Enterprise Linux AppStream (v. 9) rv 5.14.0-687.64.1.el9_8, perf 5.14.0-687.64.1.el9_8, rtla 5.14.0-687.64.1.el9_8, python3-perf 5.14.0-687.64.1.el9_8, kernel-devel-matched 5.14.0-687.64.1.el9_8, kernel-64k-devel-matched 5.14.0-687.64.1.el9_8, +7 more
    fixed: vendor fix RHSA-2026:93412
  • Red Hat Enterprise Linux AppStream (v. 10) rv 6.12.0-211.63.1.el10_2, perf 6.12.0-211.63.1.el10_2, rtla 6.12.0-211.63.1.el10_2, python3-perf 6.12.0-211.63.1.el10_2, kernel-devel-matched 6.12.0-211.63.1.el10_2, kernel-64k-devel-matched 6.12.0-211.63.1.el10_2, +7 more
    fixed: vendor fix RHSA-2026:76738
  • Red Hat Enterprise Linux AppStream E4S (v.9.2) perf 5.14.0-284.191.1.el9_2, rtla 5.14.0-284.191.1.el9_2, kernel-devel-matched 5.14.0-284.191.1.el9_2, kernel-64k-devel-matched 5.14.0-284.191.1.el9_2, kernel-debug-devel-matched 5.14.0-284.191.1.el9_2, kernel-debuginfo-common-s390x 5.14.0-284.191.1.el9_2, +5 more
    fixed: vendor fix RHSA-2026:67723
  • Red Hat Enterprise Linux AppStream E4S (v.9.4) rv 5.14.0-427.147.1.el9_4, perf 5.14.0-427.147.1.el9_4, rtla 5.14.0-427.147.1.el9_4, kernel-devel-matched 5.14.0-427.147.1.el9_4, kernel-64k-devel-matched 5.14.0-427.147.1.el9_4, kernel-debug-devel-matched 5.14.0-427.147.1.el9_4, +6 more
    fixed: vendor fix RHSA-2026:60484
  • Red Hat Enterprise Linux AppStream EUS (v. 10.0) rv 6.12.0-55.102.1.el10_0, perf 6.12.0-55.102.1.el10_0, rtla 6.12.0-55.102.1.el10_0, python3-perf 6.12.0-55.102.1.el10_0, kernel-devel-matched 6.12.0-55.102.1.el10_0, kernel-64k-devel-matched 6.12.0-55.102.1.el10_0, +7 more
    fixed: vendor fix RHSA-2026:62609
show 32 more
  • Red Hat Enterprise Linux AppStream EUS (v.9.6) rv 5.14.0-570.136.1.el9_6, perf 5.14.0-570.136.1.el9_6, rtla 5.14.0-570.136.1.el9_6, python3-perf 5.14.0-570.136.1.el9_6, kernel-devel-matched 5.14.0-570.136.1.el9_6, kernel-64k-devel-matched 5.14.0-570.136.1.el9_6, +7 more
    fixed: vendor fix RHSA-2026:60486
  • Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-553.172.1.el8_10, kernel 4.18.0-553.172.1.el8_10, bpftool 4.18.0-553.172.1.el8_10, kernel-core 4.18.0-553.172.1.el8_10, kernel-tools 4.18.0-553.172.1.el8_10, python3-perf 4.18.0-553.172.1.el8_10, +20 more
    fixed: vendor fix RHSA-2026:77498
  • Red Hat Enterprise Linux BaseOS (v. 9) kernel 5.14.0-687.64.1.el9_8, kernel-64k 5.14.0-687.64.1.el9_8, kernel-core 5.14.0-687.64.1.el9_8, kernel-tools 5.14.0-687.64.1.el9_8, kernel-modules 5.14.0-687.64.1.el9_8, kernel-64k-core 5.14.0-687.64.1.el9_8, +29 more
    fixed: vendor fix RHSA-2026:93412
  • Red Hat Enterprise Linux BaseOS (v. 10) kernel 6.12.0-211.63.1.el10_2, kernel-64k 6.12.0-211.63.1.el10_2, kernel-core 6.12.0-211.63.1.el10_2, kernel-tools 6.12.0-211.63.1.el10_2, kernel-modules 6.12.0-211.63.1.el10_2, kernel-64k-core 6.12.0-211.63.1.el10_2, +30 more
    fixed: vendor fix RHSA-2026:76738
  • Red Hat Enterprise Linux BaseOS AUS (v.8.4) perf 4.18.0-305.206.1.el8_4, kernel 4.18.0-305.206.1.el8_4, bpftool 4.18.0-305.206.1.el8_4, kernel-core 4.18.0-305.206.1.el8_4, kernel-tools 4.18.0-305.206.1.el8_4, python3-perf 4.18.0-305.206.1.el8_4, +8 more
    fixed: vendor fix RHSA-2026:65710
  • Red Hat Enterprise Linux BaseOS AUS (v.8.6) perf 4.18.0-372.213.1.el8_6, kernel 4.18.0-372.213.1.el8_6, bpftool 4.18.0-372.213.1.el8_6, kernel-core 4.18.0-372.213.1.el8_6, kernel-tools 4.18.0-372.213.1.el8_6, python3-perf 4.18.0-372.213.1.el8_6, +8 more
    fixed: vendor fix RHSA-2026:65711
  • Red Hat Enterprise Linux BaseOS E4S (v.8.8) perf 4.18.0-477.165.1.el8_8, kernel 4.18.0-477.165.1.el8_8, bpftool 4.18.0-477.165.1.el8_8, kernel-core 4.18.0-477.165.1.el8_8, kernel-tools 4.18.0-477.165.1.el8_8, python3-perf 4.18.0-477.165.1.el8_8, +14 more
    fixed: vendor fix RHSA-2026:63537
  • Red Hat Enterprise Linux BaseOS E4S (v.9.2) bpftool 7.0.0-284.191.1.el9_2, kernel 5.14.0-284.191.1.el9_2, kernel-64k 5.14.0-284.191.1.el9_2, kernel-core 5.14.0-284.191.1.el9_2, kernel-tools 5.14.0-284.191.1.el9_2, python3-perf 5.14.0-284.191.1.el9_2, +33 more
    fixed: vendor fix RHSA-2026:67723
  • Red Hat Enterprise Linux BaseOS E4S (v.9.4) bpftool 7.3.0-427.147.1.el9_4, kernel 5.14.0-427.147.1.el9_4, kernel-64k 5.14.0-427.147.1.el9_4, kernel-core 5.14.0-427.147.1.el9_4, kernel-tools 5.14.0-427.147.1.el9_4, python3-perf 5.14.0-427.147.1.el9_4, +33 more
    fixed: vendor fix RHSA-2026:60484
  • Red Hat Enterprise Linux BaseOS EUS (v. 10.0) kernel 6.12.0-55.102.1.el10_0, kernel-64k 6.12.0-55.102.1.el10_0, kernel-core 6.12.0-55.102.1.el10_0, kernel-tools 6.12.0-55.102.1.el10_0, kernel-modules 6.12.0-55.102.1.el10_0, kernel-64k-core 6.12.0-55.102.1.el10_0, +27 more
    fixed: vendor fix RHSA-2026:62609
  • Red Hat Enterprise Linux BaseOS EUS (v.9.6) kernel 5.14.0-570.136.1.el9_6, kernel-64k 5.14.0-570.136.1.el9_6, kernel-core 5.14.0-570.136.1.el9_6, kernel-tools 5.14.0-570.136.1.el9_6, kernel-modules 5.14.0-570.136.1.el9_6, kernel-64k-core 5.14.0-570.136.1.el9_6, +32 more
    fixed: vendor fix RHSA-2026:60486
  • Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4) perf 4.18.0-305.206.1.el8_4, kernel 4.18.0-305.206.1.el8_4, bpftool 4.18.0-305.206.1.el8_4, kernel-core 4.18.0-305.206.1.el8_4, kernel-tools 4.18.0-305.206.1.el8_4, python3-perf 4.18.0-305.206.1.el8_4, +8 more
    fixed: vendor fix RHSA-2026:65710
  • Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6) perf 4.18.0-372.213.1.el8_6, kernel 4.18.0-372.213.1.el8_6, bpftool 4.18.0-372.213.1.el8_6, kernel-core 4.18.0-372.213.1.el8_6, kernel-tools 4.18.0-372.213.1.el8_6, python3-perf 4.18.0-372.213.1.el8_6, +8 more
    fixed: vendor fix RHSA-2026:65711
  • Red Hat Enterprise Linux BaseOS TUS (v.8.8) perf 4.18.0-477.165.1.el8_8, kernel 4.18.0-477.165.1.el8_8, bpftool 4.18.0-477.165.1.el8_8, kernel-core 4.18.0-477.165.1.el8_8, kernel-tools 4.18.0-477.165.1.el8_8, python3-perf 4.18.0-477.165.1.el8_8, +8 more
    fixed: vendor fix RHSA-2026:63537
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) libperf 5.14.0-687.64.1.el9_8, kernel-debuginfo-common-s390x 5.14.0-687.64.1.el9_8, kernel-debuginfo-common-x86_64 5.14.0-687.64.1.el9_8, kernel-debuginfo-common-aarch64 5.14.0-687.64.1.el9_8, kernel-debuginfo-common-ppc64le 5.14.0-687.64.1.el9_8
    fixed: vendor fix RHSA-2026:93412
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) libperf 6.12.0-211.63.1.el10_2, kernel-debuginfo-common-s390x 6.12.0-211.63.1.el10_2, kernel-debuginfo-common-x86_64 6.12.0-211.63.1.el10_2, kernel-debuginfo-common-aarch64 6.12.0-211.63.1.el10_2, kernel-debuginfo-common-ppc64le 6.12.0-211.63.1.el10_2
    fixed: vendor fix RHSA-2026:76738
  • Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) libperf 6.12.0-55.102.1.el10_0, kernel-debuginfo-common-s390x 6.12.0-55.102.1.el10_0, kernel-debuginfo-common-x86_64 6.12.0-55.102.1.el10_0, kernel-debuginfo-common-aarch64 6.12.0-55.102.1.el10_0, kernel-debuginfo-common-ppc64le 6.12.0-55.102.1.el10_0
    fixed: vendor fix RHSA-2026:62609
  • Red Hat Enterprise Linux CRB (v. 8) kernel-debuginfo-common-x86_64 4.18.0-553.172.1.el8_10, kernel-debuginfo-common-aarch64 4.18.0-553.172.1.el8_10, kernel-debuginfo-common-ppc64le 4.18.0-553.172.1.el8_10
    fixed: vendor fix RHSA-2026:77498
  • Red Hat Enterprise Linux Hidden (v. 10) kernel-modules-internal 6.12.0-211.63.1.el10_2, kernel-debuginfo-common-x86_64 6.12.0-211.63.1.el10_2
    fixed: vendor fix RHSA-2026:76738
  • Red Hat Enterprise Linux NFV (v. 8) kernel-rt 4.18.0-553.172.1.rt7.513.el8_10, kernel-rt-kvm 4.18.0-553.172.1.rt7.513.el8_10, kernel-rt-core 4.18.0-553.172.1.rt7.513.el8_10, kernel-rt-modules 4.18.0-553.172.1.rt7.513.el8_10, kernel-rt-debug-kvm 4.18.0-553.172.1.rt7.513.el8_10, kernel-rt-debug-core 4.18.0-553.172.1.rt7.513.el8_10, +4 more
    fixed: vendor fix RHSA-2026:77500
  • Red Hat Enterprise Linux Real Time (v. 9) kernel-rt 5.14.0-687.64.1.el9_8, kernel-rt-64k 5.14.0-687.64.1.el9_8, kernel-rt-core 5.14.0-687.64.1.el9_8, kernel-rt-modules 5.14.0-687.64.1.el9_8, kernel-rt-64k-core 5.14.0-687.64.1.el9_8, kernel-rt-debug-core 5.14.0-687.64.1.el9_8, +14 more
    fixed: vendor fix RHSA-2026:93412
  • Red Hat Enterprise Linux Real Time (v. 10) kernel-rt 6.12.0-211.63.1.el10_2, kernel-rt-64k 6.12.0-211.63.1.el10_2, kernel-rt-core 6.12.0-211.63.1.el10_2, kernel-rt-modules 6.12.0-211.63.1.el10_2, kernel-rt-64k-core 6.12.0-211.63.1.el10_2, kernel-rt-debug-core 6.12.0-211.63.1.el10_2, +14 more
    fixed: vendor fix RHSA-2026:76738
  • Red Hat Enterprise Linux Real Time E4S (v.9.2) kernel-rt 5.14.0-284.191.1.rt14.476.el9_2, kernel-rt-core 5.14.0-284.191.1.rt14.476.el9_2, kernel-rt-modules 5.14.0-284.191.1.rt14.476.el9_2, kernel-rt-debug-core 5.14.0-284.191.1.rt14.476.el9_2, kernel-rt-modules-core 5.14.0-284.191.1.rt14.476.el9_2, kernel-rt-debug-modules 5.14.0-284.191.1.rt14.476.el9_2, +4 more
    fixed: vendor fix RHSA-2026:67721
  • Red Hat Enterprise Linux Real Time E4S (v.9.4) kernel-rt 5.14.0-427.147.1.el9_4, kernel-rt-core 5.14.0-427.147.1.el9_4, kernel-rt-modules 5.14.0-427.147.1.el9_4, kernel-rt-debug-core 5.14.0-427.147.1.el9_4, kernel-rt-modules-core 5.14.0-427.147.1.el9_4, kernel-rt-debug-modules 5.14.0-427.147.1.el9_4, +4 more
    fixed: vendor fix RHSA-2026:60484
  • Red Hat Enterprise Linux Real Time EUS (v. 10.0) kernel-rt 6.12.0-55.102.1.el10_0, kernel-rt-64k 6.12.0-55.102.1.el10_0, kernel-rt-core 6.12.0-55.102.1.el10_0, kernel-rt-modules 6.12.0-55.102.1.el10_0, kernel-rt-64k-core 6.12.0-55.102.1.el10_0, kernel-rt-debug-core 6.12.0-55.102.1.el10_0, +14 more
    fixed: vendor fix RHSA-2026:62609
  • Red Hat Enterprise Linux Real Time EUS (v.9.6) kernel-rt 5.14.0-570.136.1.el9_6, kernel-rt-64k 5.14.0-570.136.1.el9_6, kernel-rt-core 5.14.0-570.136.1.el9_6, kernel-rt-modules 5.14.0-570.136.1.el9_6, kernel-rt-64k-core 5.14.0-570.136.1.el9_6, kernel-rt-debug-core 5.14.0-570.136.1.el9_6, +14 more
    fixed: vendor fix RHSA-2026:60486
  • Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt 5.14.0-687.64.1.el9_8, kernel-rt-core 5.14.0-687.64.1.el9_8, kernel-rt-modules 5.14.0-687.64.1.el9_8, kernel-rt-debug-core 5.14.0-687.64.1.el9_8, kernel-rt-modules-core 5.14.0-687.64.1.el9_8, kernel-rt-debug-modules 5.14.0-687.64.1.el9_8, +4 more
    fixed: vendor fix RHSA-2026:93412
  • Red Hat Enterprise Linux Real Time for NFV (v. 10) kernel-rt 6.12.0-211.63.1.el10_2, kernel-rt-core 6.12.0-211.63.1.el10_2, kernel-rt-modules 6.12.0-211.63.1.el10_2, kernel-rt-debug-core 6.12.0-211.63.1.el10_2, kernel-rt-modules-core 6.12.0-211.63.1.el10_2, kernel-rt-debug-modules 6.12.0-211.63.1.el10_2, +4 more
    fixed: vendor fix RHSA-2026:76738
  • Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2) kernel-rt 5.14.0-284.191.1.rt14.476.el9_2, kernel-rt-kvm 5.14.0-284.191.1.rt14.476.el9_2, kernel-rt-core 5.14.0-284.191.1.rt14.476.el9_2, kernel-rt-modules 5.14.0-284.191.1.rt14.476.el9_2, kernel-rt-debug-kvm 5.14.0-284.191.1.rt14.476.el9_2, kernel-rt-debug-core 5.14.0-284.191.1.rt14.476.el9_2, +6 more
    fixed: vendor fix RHSA-2026:67721
  • Red Hat Enterprise Linux Real Time for NFV E4S (v.9.4) kernel-rt 5.14.0-427.147.1.el9_4, kernel-rt-kvm 5.14.0-427.147.1.el9_4, kernel-rt-core 5.14.0-427.147.1.el9_4, kernel-rt-modules 5.14.0-427.147.1.el9_4, kernel-rt-debug-kvm 5.14.0-427.147.1.el9_4, kernel-rt-debug-core 5.14.0-427.147.1.el9_4, +6 more
    fixed: vendor fix RHSA-2026:60484
  • Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0) kernel-rt 6.12.0-55.102.1.el10_0, kernel-rt-kvm 6.12.0-55.102.1.el10_0, kernel-rt-core 6.12.0-55.102.1.el10_0, kernel-rt-modules 6.12.0-55.102.1.el10_0, kernel-rt-debug-kvm 6.12.0-55.102.1.el10_0, kernel-rt-debug-core 6.12.0-55.102.1.el10_0, +6 more
    fixed: vendor fix RHSA-2026:62609
  • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.6) kernel-rt 5.14.0-570.136.1.el9_6, kernel-rt-kvm 5.14.0-570.136.1.el9_6, kernel-rt-core 5.14.0-570.136.1.el9_6, kernel-rt-modules 5.14.0-570.136.1.el9_6, kernel-rt-debug-kvm 5.14.0-570.136.1.el9_6, kernel-rt-debug-core 5.14.0-570.136.1.el9_6, +6 more
    fixed: vendor fix RHSA-2026:60486

1 more fixed, 3 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
total
Assessed
23 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
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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.