RHSA-2026:36530HighCVSS 8.1

Red Hat Security Advisory: kpatch-patch-4_18_0-553_109_1, kpatch-patch-4_18_0-553_125_1, kpatch-patch-4_18_0-553_53_1, kpatch-patch-4_18_0-553_72_1, and kpatch-patch-4_18_0-553_85_1 security update

Published
July 8, 2026
Last Modified
October 16, 2026

🔗 CVE IDs covered (3)

CVE-2026-23401 →CVE-2026-31402 →CVE-2026-31419 →

📋 Description

CVE-2026-23401 — kernel: Linux kernel KVM: Privilege escalation or denial of service due to improper shadow page table entry handling CVE-2026-31402 — kernel: nfsd: fix heap overflow in NFSv4.0 LOCK replay cache CVE-2026-31419 — kernel: Linux kernel: Use-after-free in bonding driver leads to denial of service

🎯 Affected products36

  • Red Hat Enterprise Linux BaseOS (v. 8)
  • kpatch-patch-4_18_0-553_109_1-0:1-6.el8_10.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kpatch-patch-4_18_0-553_109_1-0:1-6.el8_10.src as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kpatch-patch-4_18_0-553_109_1-0:1-6.el8_10.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kpatch-patch-4_18_0-553_109_1-debuginfo-0:1-6.el8_10.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kpatch-patch-4_18_0-553_109_1-debuginfo-0:1-6.el8_10.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kpatch-patch-4_18_0-553_109_1-debugsource-0:1-6.el8_10.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kpatch-patch-4_18_0-553_109_1-debugsource-0:1-6.el8_10.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kpatch-patch-4_18_0-553_125_1-0:1-3.el8_10.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kpatch-patch-4_18_0-553_125_1-0:1-3.el8_10.src as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kpatch-patch-4_18_0-553_125_1-0:1-3.el8_10.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kpatch-patch-4_18_0-553_125_1-debuginfo-0:1-3.el8_10.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kpatch-patch-4_18_0-553_125_1-debuginfo-0:1-3.el8_10.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kpatch-patch-4_18_0-553_125_1-debugsource-0:1-3.el8_10.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kpatch-patch-4_18_0-553_125_1-debugsource-0:1-3.el8_10.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kpatch-patch-4_18_0-553_53_1-0:1-13.el8_10.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kpatch-patch-4_18_0-553_53_1-0:1-13.el8_10.src as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kpatch-patch-4_18_0-553_53_1-0:1-13.el8_10.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kpatch-patch-4_18_0-553_53_1-debuginfo-0:1-13.el8_10.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kpatch-patch-4_18_0-553_53_1-debuginfo-0:1-13.el8_10.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kpatch-patch-4_18_0-553_53_1-debugsource-0:1-13.el8_10.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kpatch-patch-4_18_0-553_53_1-debugsource-0:1-13.el8_10.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kpatch-patch-4_18_0-553_72_1-0:1-10.el8_10.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kpatch-patch-4_18_0-553_72_1-0:1-10.el8_10.src as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kpatch-patch-4_18_0-553_72_1-0:1-10.el8_10.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kpatch-patch-4_18_0-553_72_1-debuginfo-0:1-10.el8_10.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kpatch-patch-4_18_0-553_72_1-debuginfo-0:1-10.el8_10.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kpatch-patch-4_18_0-553_72_1-debugsource-0:1-10.el8_10.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kpatch-patch-4_18_0-553_72_1-debugsource-0:1-10.el8_10.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kpatch-patch-4_18_0-553_85_1-0:1-8.el8_10.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • +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: Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability. 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)