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Fencer Intel
critical 9.8

CVE-2026-72319 in the critical feed json

ipvs: ensure inner headers in ICMP errors are in headroom

published 2mo ago modified 26d ago also EUVD-2026-59218

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 55%
public exploits
0
none known

Summary

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

ipvs: ensure inner headers in ICMP errors are in headroom

Sashiko points out that after stripping the outer headers with pskb_pull() we should ensure the inner IP headers in ICMP errors from tunnels are present in the skb headroom for functions like ipv4_update_pmtu(), icmp_send() and IP_VS_DBG().

Also, add more checks for the length of the inner headers.

Patch / fix

  • Linux Linux 5.10.261, 5.15.212, 6.1.178, 6.6.145, 6.12.97, 6.18.40, 7.1.5, 7.2
  • linux Debian 12 6.1.180-1
  • linux Debian 13 6.12.100-1
  • linux Debian 14 7.1.5-1

debian advisories DEBIAN-CVE-2026-72319

  • linux Ubuntu 22.04 LTS 5.15.0-198.208
  • linux Ubuntu 24.04 LTS 6.8.0-147.147
  • linux Ubuntu 26.04 LTS 7.0.0-34.34
  • linux-aws Ubuntu 22.04 LTS 5.15.0-1117.124
  • linux-aws Ubuntu 24.04 LTS 6.8.0-1067.70
  • linux-aws Ubuntu 26.04 LTS 7.0.0-1013.13
  • linux-gcp Ubuntu 22.04 LTS 5.15.0-1118.128
  • linux-gcp Ubuntu 24.04 LTS 6.8.0-1071.79

ubuntu advisories UBUNTU-CVE-2026-72319

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 Real Time Module 15 SP7 6.4.0-150700.7.81.1
  • kernel-syms-rt Real Time Module 15 SP7 6.4.0-150700.7.81.1
  • kernel-source-rt Real Time Module 15 SP7 6.4.0-150700.7.81.1
  • kernel-64kb SLE Module for Basesystem 15 SP7 6.4.0-150700.53.87.3
  • kernel-syms SLE Module for Development Tools 15 SP7 6.4.0-150700.53.87.1
  • kernel-azure SLE Module for Public Cloud 15 SP7 6.4.0-150700.53.87.3
  • kernel-source SLE Module for Development Tools 15 SP7, SLE Module for Basesystem 15 SP7 6.4.0-150700.53.87.3
  • kernel-default SLE Workstation Extension 15 SP7, SLE Module for Legacy 15 SP7, SLE Module for Basesystem 15 SP7 +2 more 6.4.0-150700.53.87.3

suse advisories SUSE-SU-2026:4940-1SUSE-SU-2026:4935-1SUSE-SU-2026:24473-1SUSE-SU-2026:24553-1SUSE-SU-2026:24422-1SUSE-SU-2026:24446-1

  • kernel-rt openSUSE Leap 16.0 6.12.0-160000.40.1
  • dtb-aarch64 openSUSE Leap 16.0 6.12.0-160000.40.1
  • kernel-64kb openSUSE Leap 16.0 6.12.0-160000.40.1
  • kernel-syms openSUSE Leap 16.0 6.12.0-160000.40.1
  • kernel-azure openSUSE Leap 16.0 6.12.0-160000.40.1
  • kernel-obs-qa openSUSE Leap 16.0 6.12.0-160000.40.1
  • kernel-source openSUSE Leap 16.0 6.12.0-160000.40.1
  • kernel-default openSUSE Leap 16.0 6.12.0-160000.40.1

opensuse advisories openSUSE-SU-2026:22167-1

Is CVE-2026-72319 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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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-2026-72319 updated cvss 8.8

kernel: ipvs: ensure inner headers in ICMP errors are in headroom

  • Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 more Red Hat Enterprise Linux 8 perf, kernel, bpftool, kernel-rt, kernel-core, kernel-tools, +29 more 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: workaround, no fix available
  • Red Hat Enterprise Linux AppStream (v. 9) rv 5.14.0-741.20.1.el9_9, perf 5.14.0-741.20.1.el9_9, rtla 5.14.0-741.20.1.el9_9, python3-perf 5.14.0-741.20.1.el9_9, kernel-devel-matched 5.14.0-741.20.1.el9_9, kernel-64k-devel-matched 5.14.0-741.20.1.el9_9, +7 more
    fixed: vendor fix RHSA-2026:97873
  • Red Hat Enterprise Linux AppStream (v. 10) rv 6.12.0-264.9.1.el10_3, perf 6.12.0-264.9.1.el10_3, rtla 6.12.0-264.9.1.el10_3, python3-perf 6.12.0-264.9.1.el10_3, kernel-devel-matched 6.12.0-264.9.1.el10_3, kernel-64k-devel-matched 6.12.0-264.9.1.el10_3, +7 more
    fixed: vendor fix RHSA-2026:97040
  • Red Hat Enterprise Linux BaseOS (v. 9) kernel 5.14.0-741.20.1.el9_9, kernel-64k 5.14.0-741.20.1.el9_9, kernel-core 5.14.0-741.20.1.el9_9, kernel-tools 5.14.0-741.20.1.el9_9, kernel-modules 5.14.0-741.20.1.el9_9, kernel-64k-core 5.14.0-741.20.1.el9_9, +27 more
    fixed: vendor fix RHSA-2026:97873
  • Red Hat Enterprise Linux BaseOS (v. 10) kernel 6.12.0-264.9.1.el10_3, kernel-64k 6.12.0-264.9.1.el10_3, kernel-core 6.12.0-264.9.1.el10_3, kernel-tools 6.12.0-264.9.1.el10_3, kernel-modules 6.12.0-264.9.1.el10_3, kernel-64k-core 6.12.0-264.9.1.el10_3, +28 more
    fixed: vendor fix RHSA-2026:97040
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) libperf 5.14.0-741.20.1.el9_9, kernel-debuginfo-common-s390x 5.14.0-741.20.1.el9_9, kernel-debuginfo-common-x86_64 5.14.0-741.20.1.el9_9, kernel-debuginfo-common-aarch64 5.14.0-741.20.1.el9_9, kernel-debuginfo-common-ppc64le 5.14.0-741.20.1.el9_9
    fixed: vendor fix RHSA-2026:97873
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) libperf 6.12.0-264.9.1.el10_3, kernel-debuginfo-common-s390x 6.12.0-264.9.1.el10_3, kernel-debuginfo-common-x86_64 6.12.0-264.9.1.el10_3, kernel-debuginfo-common-aarch64 6.12.0-264.9.1.el10_3, kernel-debuginfo-common-ppc64le 6.12.0-264.9.1.el10_3
    fixed: vendor fix RHSA-2026:97040
  • Red Hat Enterprise Linux Real Time (v. 9) kernel-rt 5.14.0-741.20.1.el9_9, kernel-rt-64k 5.14.0-741.20.1.el9_9, kernel-rt-core 5.14.0-741.20.1.el9_9, kernel-rt-modules 5.14.0-741.20.1.el9_9, kernel-rt-64k-core 5.14.0-741.20.1.el9_9, kernel-rt-debug-core 5.14.0-741.20.1.el9_9, +14 more
    fixed: vendor fix RHSA-2026:97873
show 4 more
  • Red Hat Enterprise Linux Real Time (v. 10) kernel-rt 6.12.0-264.9.1.el10_3, kernel-rt-64k 6.12.0-264.9.1.el10_3, kernel-rt-core 6.12.0-264.9.1.el10_3, kernel-rt-modules 6.12.0-264.9.1.el10_3, kernel-rt-64k-core 6.12.0-264.9.1.el10_3, kernel-rt-debug-core 6.12.0-264.9.1.el10_3, +14 more
    fixed: vendor fix RHSA-2026:97040
  • Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt 5.14.0-741.20.1.el9_9, kernel-rt-core 5.14.0-741.20.1.el9_9, kernel-rt-modules 5.14.0-741.20.1.el9_9, kernel-rt-debug-core 5.14.0-741.20.1.el9_9, kernel-rt-modules-core 5.14.0-741.20.1.el9_9, kernel-rt-debug-modules 5.14.0-741.20.1.el9_9, +5 more
    fixed: vendor fix RHSA-2026:97873
  • Red Hat Enterprise Linux Real Time for NFV (v. 10) kernel-rt 6.12.0-264.9.1.el10_3, kernel-rt-core 6.12.0-264.9.1.el10_3, kernel-rt-modules 6.12.0-264.9.1.el10_3, kernel-rt-debug-core 6.12.0-264.9.1.el10_3, kernel-rt-modules-core 6.12.0-264.9.1.el10_3, kernel-rt-debug-modules 6.12.0-264.9.1.el10_3, +5 more
    fixed: vendor fix RHSA-2026:97040
  • Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more
    not affected: vulnerable code not present

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
26d ago

Exploit prediction

0.75% chance of exploitation in the next 30 days, higher than 55% of all scored CVEs (FIRST EPSS, 2026-11-11).

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

Affected products

  • Linux Linux

Classification

Technology feeds

References

Sources

Fencer Intel 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.