Red Hat Security Advisory: kernel security update

Fixed packages 52

Vulnerabilities 1

• Unscored —
  CVE-2026-80844 Public exploit

  xfrm: ah6: validate routing header segments_left

  In the Linux kernel, the following vulnerability has been resolved: xfrm: ah6: validate routing header segments_left AH6 rearranges routing-header addresses before computing or verifying the ICV. ipv6_rearrange_rthdr() assumes that segments_left is not larger…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Sep 4, 2026

References

• article
  https://docs.redhat.com/en/documentation/red_hat_enterprise_linux_for_nvidia/26.01/html/26.01_release_notes/index
• article
  https://access.redhat.com/security/updates/classification/#important
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2528676
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_74974.json
• report
  https://access.redhat.com/security/cve/CVE-2026-80844
• article
  https://access.redhat.com/security/vulnerabilities/RHSB-2026-011
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-80844
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-80844
• article
  https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-80844.mbox