RHSA-2026:23470HighCVSS 7.8

Red Hat Security Advisory: kpatch-patch-4_18_0-553_109_1, kpatch-patch-4_18_0-553_40_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
June 4, 2026
Last Modified
August 21, 2026

🔗 CVE IDs covered (3)

CVE-2026-43503 →CVE-2026-46300 →CVE-2026-46333 →

📋 Description

CVE-2026-43503 — kernel: net: skbuff: propagate shared-frag marker through frag-transfer helpers CVE-2026-46300 — kernel: "Fragnesia" is a variant of Dirty Frag vulnerability in the ESP/XFRM leading to Local Privilege Escalation (LPE) vulnerability in the Linux kernel CVE-2026-46333 — kernel: Read root-owned files as an unprivileged user

🎯 Affected products36

  • Red Hat Enterprise Linux BaseOS (v. 8)
  • kpatch-patch-4_18_0-553_109_1-0:1-3.el8_10.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kpatch-patch-4_18_0-553_109_1-0:1-3.el8_10.src as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kpatch-patch-4_18_0-553_109_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_109_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_109_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_109_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_109_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_40_1-0:1-12.el8_10.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kpatch-patch-4_18_0-553_40_1-0:1-12.el8_10.src as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kpatch-patch-4_18_0-553_40_1-0:1-12.el8_10.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kpatch-patch-4_18_0-553_40_1-debuginfo-0:1-12.el8_10.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kpatch-patch-4_18_0-553_40_1-debuginfo-0:1-12.el8_10.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kpatch-patch-4_18_0-553_40_1-debugsource-0:1-12.el8_10.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kpatch-patch-4_18_0-553_40_1-debugsource-0:1-12.el8_10.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kpatch-patch-4_18_0-553_53_1-0:1-10.el8_10.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kpatch-patch-4_18_0-553_53_1-0:1-10.el8_10.src as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kpatch-patch-4_18_0-553_53_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_53_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_53_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_53_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_53_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_72_1-0:1-7.el8_10.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kpatch-patch-4_18_0-553_72_1-0:1-7.el8_10.src as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kpatch-patch-4_18_0-553_72_1-0:1-7.el8_10.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kpatch-patch-4_18_0-553_72_1-debuginfo-0:1-7.el8_10.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kpatch-patch-4_18_0-553_72_1-debuginfo-0:1-7.el8_10.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kpatch-patch-4_18_0-553_72_1-debugsource-0:1-7.el8_10.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kpatch-patch-4_18_0-553_72_1-debugsource-0:1-7.el8_10.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kpatch-patch-4_18_0-553_85_1-0:1-5.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: See the security bulletin for a detailed mitigation procedure.

🔗 References (5)