RHSA-2026:62639HighCVSS 8.1

Red Hat Security Advisory: kpatch-patch-5_14_0-427_100_1, kpatch-patch-5_14_0-427_113_1, kpatch-patch-5_14_0-427_126_1, kpatch-patch-5_14_0-427_68_2, and kpatch-patch-5_14_0-427_84_1 security update

Published
September 2, 2026
Last Modified
September 8, 2026

🔗 CVE IDs covered (5)

CVE-2026-46323 →CVE-2026-53264 →CVE-2026-23111 →CVE-2026-43112 →CVE-2026-43114 →

📋 Description

CVE-2026-23111 — kernel: Kernel: Privilege escalation or denial of service in nf_tables via inverted element activity check CVE-2026-43112 — kernel: fs/smb/client: fix out-of-bounds read in cifs_sanitize_prepath CVE-2026-43114 — kernel: netfilter: nft_set_pipapo_avx2: don't return non-matching entry on expiry CVE-2026-46323 — kernel: Linux kernel: Use-After-Free in net/gro due to improper handling of zerocopy skbs CVE-2026-53264 — kernel: net/sched: act_api: use RCU with deferred freeing for action lifecycle

🎯 Affected products36

  • Red Hat Enterprise Linux BaseOS E4S (v.9.4)
  • kpatch-patch-5_14_0-427_100_1-0:1-14.el9_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.4)
  • kpatch-patch-5_14_0-427_100_1-0:1-14.el9_4.src as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.4)
  • kpatch-patch-5_14_0-427_100_1-0:1-14.el9_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.4)
  • kpatch-patch-5_14_0-427_100_1-debuginfo-0:1-14.el9_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.4)
  • kpatch-patch-5_14_0-427_100_1-debuginfo-0:1-14.el9_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.4)
  • kpatch-patch-5_14_0-427_100_1-debugsource-0:1-14.el9_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.4)
  • kpatch-patch-5_14_0-427_100_1-debugsource-0:1-14.el9_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.4)
  • kpatch-patch-5_14_0-427_113_1-0:1-12.el9_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.4)
  • kpatch-patch-5_14_0-427_113_1-0:1-12.el9_4.src as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.4)
  • kpatch-patch-5_14_0-427_113_1-0:1-12.el9_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.4)
  • kpatch-patch-5_14_0-427_113_1-debuginfo-0:1-12.el9_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.4)
  • kpatch-patch-5_14_0-427_113_1-debuginfo-0:1-12.el9_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.4)
  • kpatch-patch-5_14_0-427_113_1-debugsource-0:1-12.el9_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.4)
  • kpatch-patch-5_14_0-427_113_1-debugsource-0:1-12.el9_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.4)
  • kpatch-patch-5_14_0-427_126_1-0:1-9.el9_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.4)
  • kpatch-patch-5_14_0-427_126_1-0:1-9.el9_4.src as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.4)
  • kpatch-patch-5_14_0-427_126_1-0:1-9.el9_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.4)
  • kpatch-patch-5_14_0-427_126_1-debuginfo-0:1-9.el9_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.4)
  • kpatch-patch-5_14_0-427_126_1-debuginfo-0:1-9.el9_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.4)
  • kpatch-patch-5_14_0-427_126_1-debugsource-0:1-9.el9_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.4)
  • kpatch-patch-5_14_0-427_126_1-debugsource-0:1-9.el9_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.4)
  • kpatch-patch-5_14_0-427_68_2-0:1-21.el9_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.4)
  • kpatch-patch-5_14_0-427_68_2-0:1-21.el9_4.src as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.4)
  • kpatch-patch-5_14_0-427_68_2-0:1-21.el9_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.4)
  • kpatch-patch-5_14_0-427_68_2-debuginfo-0:1-21.el9_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.4)
  • kpatch-patch-5_14_0-427_68_2-debuginfo-0:1-21.el9_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.4)
  • kpatch-patch-5_14_0-427_68_2-debugsource-0:1-21.el9_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.4)
  • kpatch-patch-5_14_0-427_68_2-debugsource-0:1-21.el9_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.4)
  • kpatch-patch-5_14_0-427_84_1-0:1-16.el9_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.4)
  • +6 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 Workaround: To mitigate this issue, prevent module nf_tables from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically. 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 (8)