RHSA-2026:96091HighCVSS 8.8

Red Hat Security Advisory: kpatch-patch-5_14_0-570_116_1, kpatch-patch-5_14_0-570_135_1, kpatch-patch-5_14_0-570_39_1, kpatch-patch-5_14_0-570_66_1, and kpatch-patch-5_14_0-570_94_1 security update

Published
November 9, 2026
Last Modified
November 12, 2026

🔗 CVE IDs covered (4)

CVE-2026-46195 →CVE-2026-52923 →CVE-2026-74705 →CVE-2026-81000 →

📋 Description

CVE-2026-46195 — kernel: smb: client: validate dacloffset before building DACL pointers CVE-2026-52923 — kernel: ipc: limit next_id allocation to the valid ID range CVE-2026-74705 — kernel: udp: fix potential use-after-free in tunnel segmentation CVE-2026-81000 — kernel: net: tun: bound receive headroom

🎯 Affected products36

  • Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • kpatch-patch-5_14_0-570_116_1-0:1-13.el9_6.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • kpatch-patch-5_14_0-570_116_1-0:1-13.el9_6.src as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • kpatch-patch-5_14_0-570_116_1-0:1-13.el9_6.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • kpatch-patch-5_14_0-570_116_1-debuginfo-0:1-13.el9_6.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • kpatch-patch-5_14_0-570_116_1-debuginfo-0:1-13.el9_6.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • kpatch-patch-5_14_0-570_116_1-debugsource-0:1-13.el9_6.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • kpatch-patch-5_14_0-570_116_1-debugsource-0:1-13.el9_6.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • kpatch-patch-5_14_0-570_135_1-0:1-4.el9_6.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • kpatch-patch-5_14_0-570_135_1-0:1-4.el9_6.src as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • kpatch-patch-5_14_0-570_135_1-0:1-4.el9_6.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • kpatch-patch-5_14_0-570_135_1-debuginfo-0:1-4.el9_6.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • kpatch-patch-5_14_0-570_135_1-debuginfo-0:1-4.el9_6.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • kpatch-patch-5_14_0-570_135_1-debugsource-0:1-4.el9_6.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • kpatch-patch-5_14_0-570_135_1-debugsource-0:1-4.el9_6.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • kpatch-patch-5_14_0-570_39_1-0:1-19.el9_6.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • kpatch-patch-5_14_0-570_39_1-0:1-19.el9_6.src as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • kpatch-patch-5_14_0-570_39_1-0:1-19.el9_6.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • kpatch-patch-5_14_0-570_39_1-debuginfo-0:1-19.el9_6.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • kpatch-patch-5_14_0-570_39_1-debuginfo-0:1-19.el9_6.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • kpatch-patch-5_14_0-570_39_1-debugsource-0:1-19.el9_6.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • kpatch-patch-5_14_0-570_39_1-debugsource-0:1-19.el9_6.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • kpatch-patch-5_14_0-570_66_1-0:1-18.el9_6.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • kpatch-patch-5_14_0-570_66_1-0:1-18.el9_6.src as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • kpatch-patch-5_14_0-570_66_1-0:1-18.el9_6.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • kpatch-patch-5_14_0-570_66_1-debuginfo-0:1-18.el9_6.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • kpatch-patch-5_14_0-570_66_1-debuginfo-0:1-18.el9_6.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • kpatch-patch-5_14_0-570_66_1-debugsource-0:1-18.el9_6.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • kpatch-patch-5_14_0-570_66_1-debugsource-0:1-18.el9_6.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • kpatch-patch-5_14_0-570_94_1-0:1-16.el9_6.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • +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, avoid mounting shares from untrusted SMB servers on 32-bit Red Hat Enterprise Linux systems. If interaction with untrusted SMB servers is unavoidable, consider isolating affected systems or restricting network access to only known, trusted SMB servers. 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. Workaround: See the security bulletin for a detailed mitigation procedure.

🔗 References (7)