RHSA-2026:83796HighCVSS 7.1

Red Hat Security Advisory: kernel security update

Published
October 16, 2026
Last Modified
October 30, 2026

🔗 CVE IDs covered (3)

CVE-2026-31411 →CVE-2026-63922 →CVE-2026-63924 →

📋 Description

CVE-2026-31411 — kernel: net: atm: fix crash due to unvalidated vcc pointer in sigd_send() CVE-2026-63922 — kernel: ipv6: exthdrs: refresh nh after handling HAO option CVE-2026-63924 — kernel: ipv6: exthdrs: refresh nh pointer after ipv6_hop_jumbo()

🎯 Affected products58

  • Red Hat Enterprise Linux Server -EXTENSION(v. 6 ELS-EXTENSION)
  • Red Hat Enterprise Linux Server Optional -EXTENSION (v. 6 ELS -EXTENSION)
  • kernel-0:2.6.32-754.65.1.el6.i686 as a component of Red Hat Enterprise Linux Server -EXTENSION(v. 6 ELS-EXTENSION)
  • kernel-0:2.6.32-754.65.1.el6.s390x as a component of Red Hat Enterprise Linux Server -EXTENSION(v. 6 ELS-EXTENSION)
  • kernel-0:2.6.32-754.65.1.el6.src as a component of Red Hat Enterprise Linux Server -EXTENSION(v. 6 ELS-EXTENSION)
  • kernel-0:2.6.32-754.65.1.el6.x86_64 as a component of Red Hat Enterprise Linux Server -EXTENSION(v. 6 ELS-EXTENSION)
  • kernel-abi-whitelists-0:2.6.32-754.65.1.el6.noarch as a component of Red Hat Enterprise Linux Server -EXTENSION(v. 6 ELS-EXTENSION)
  • kernel-debug-0:2.6.32-754.65.1.el6.i686 as a component of Red Hat Enterprise Linux Server -EXTENSION(v. 6 ELS-EXTENSION)
  • kernel-debug-0:2.6.32-754.65.1.el6.s390x as a component of Red Hat Enterprise Linux Server -EXTENSION(v. 6 ELS-EXTENSION)
  • kernel-debug-0:2.6.32-754.65.1.el6.x86_64 as a component of Red Hat Enterprise Linux Server -EXTENSION(v. 6 ELS-EXTENSION)
  • kernel-debug-debuginfo-0:2.6.32-754.65.1.el6.i686 as a component of Red Hat Enterprise Linux Server -EXTENSION(v. 6 ELS-EXTENSION)
  • kernel-debug-debuginfo-0:2.6.32-754.65.1.el6.i686 as a component of Red Hat Enterprise Linux Server Optional -EXTENSION (v. 6 ELS -EXTENSION)
  • kernel-debug-debuginfo-0:2.6.32-754.65.1.el6.s390x as a component of Red Hat Enterprise Linux Server -EXTENSION(v. 6 ELS-EXTENSION)
  • kernel-debug-debuginfo-0:2.6.32-754.65.1.el6.s390x as a component of Red Hat Enterprise Linux Server Optional -EXTENSION (v. 6 ELS -EXTENSION)
  • kernel-debug-debuginfo-0:2.6.32-754.65.1.el6.x86_64 as a component of Red Hat Enterprise Linux Server -EXTENSION(v. 6 ELS-EXTENSION)
  • kernel-debug-debuginfo-0:2.6.32-754.65.1.el6.x86_64 as a component of Red Hat Enterprise Linux Server Optional -EXTENSION (v. 6 ELS -EXTENSION)
  • kernel-debug-devel-0:2.6.32-754.65.1.el6.i686 as a component of Red Hat Enterprise Linux Server -EXTENSION(v. 6 ELS-EXTENSION)
  • kernel-debug-devel-0:2.6.32-754.65.1.el6.s390x as a component of Red Hat Enterprise Linux Server -EXTENSION(v. 6 ELS-EXTENSION)
  • kernel-debug-devel-0:2.6.32-754.65.1.el6.x86_64 as a component of Red Hat Enterprise Linux Server -EXTENSION(v. 6 ELS-EXTENSION)
  • kernel-debuginfo-0:2.6.32-754.65.1.el6.i686 as a component of Red Hat Enterprise Linux Server -EXTENSION(v. 6 ELS-EXTENSION)
  • kernel-debuginfo-0:2.6.32-754.65.1.el6.i686 as a component of Red Hat Enterprise Linux Server Optional -EXTENSION (v. 6 ELS -EXTENSION)
  • kernel-debuginfo-0:2.6.32-754.65.1.el6.s390x as a component of Red Hat Enterprise Linux Server -EXTENSION(v. 6 ELS-EXTENSION)
  • kernel-debuginfo-0:2.6.32-754.65.1.el6.s390x as a component of Red Hat Enterprise Linux Server Optional -EXTENSION (v. 6 ELS -EXTENSION)
  • kernel-debuginfo-0:2.6.32-754.65.1.el6.x86_64 as a component of Red Hat Enterprise Linux Server -EXTENSION(v. 6 ELS-EXTENSION)
  • kernel-debuginfo-0:2.6.32-754.65.1.el6.x86_64 as a component of Red Hat Enterprise Linux Server Optional -EXTENSION (v. 6 ELS -EXTENSION)
  • kernel-debuginfo-common-i686-0:2.6.32-754.65.1.el6.i686 as a component of Red Hat Enterprise Linux Server -EXTENSION(v. 6 ELS-EXTENSION)
  • kernel-debuginfo-common-i686-0:2.6.32-754.65.1.el6.i686 as a component of Red Hat Enterprise Linux Server Optional -EXTENSION (v. 6 ELS -EXTENSION)
  • kernel-debuginfo-common-s390x-0:2.6.32-754.65.1.el6.s390x as a component of Red Hat Enterprise Linux Server -EXTENSION(v. 6 ELS-EXTENSION)
  • kernel-debuginfo-common-s390x-0:2.6.32-754.65.1.el6.s390x as a component of Red Hat Enterprise Linux Server Optional -EXTENSION (v. 6 ELS -EXTENSION)
  • kernel-debuginfo-common-x86_64-0:2.6.32-754.65.1.el6.x86_64 as a component of Red Hat Enterprise Linux Server -EXTENSION(v. 6 ELS-EXTENSION)
  • +28 more not shown

✅ Remediation

For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 The system must be rebooted for this update to take effect. Red Hat recommends treating all kernel errata as security-relevant. Given the kernel's fundamental role, any bug has a higher chance of impacting system security, even if that impact only becomes clear after a fix is published. Therefore, Red Hat prioritizes delivering fixes that improve our customers' overall security posture. Because of this proactive approach, a patch may be associated with a CVE assignment at a future date. Retroactive CVE assignments are always documented in the corresponding errata and on Red Hat's CVE pages. We strongly advise against delaying updates, as doing so may leave your system exposed when protections are already available. Workaround: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

🔗 References (6)