RHSA-2024:0851HighCVSS 7.8

Red Hat Security Advisory: kpatch-patch security update

Published
February 15, 2024
Last Modified
August 6, 2026

🔗 CVE IDs covered (2)

CVE-2023-4921 →CVE-2024-0646 →

📋 Description

CVE-2023-4921 — kernel: use-after-free in sch_qfq network scheduler CVE-2024-0646 — kernel: ktls overwrites readonly memory pages when using function splice with a ktls socket as destination

🎯 Affected products36

  • Red Hat Enterprise Linux BaseOS EUS (v.8.6)
  • kpatch-patch-4_18_0-372_64_1-0:1-5.el8_6.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.6)
  • kpatch-patch-4_18_0-372_64_1-0:1-5.el8_6.src as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.6)
  • kpatch-patch-4_18_0-372_64_1-0:1-5.el8_6.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.6)
  • kpatch-patch-4_18_0-372_64_1-debuginfo-0:1-5.el8_6.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.6)
  • kpatch-patch-4_18_0-372_64_1-debuginfo-0:1-5.el8_6.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.6)
  • kpatch-patch-4_18_0-372_64_1-debugsource-0:1-5.el8_6.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.6)
  • kpatch-patch-4_18_0-372_64_1-debugsource-0:1-5.el8_6.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.6)
  • kpatch-patch-4_18_0-372_70_1-0:1-4.el8_6.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.6)
  • kpatch-patch-4_18_0-372_70_1-0:1-4.el8_6.src as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.6)
  • kpatch-patch-4_18_0-372_70_1-0:1-4.el8_6.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.6)
  • kpatch-patch-4_18_0-372_70_1-debuginfo-0:1-4.el8_6.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.6)
  • kpatch-patch-4_18_0-372_70_1-debuginfo-0:1-4.el8_6.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.6)
  • kpatch-patch-4_18_0-372_70_1-debugsource-0:1-4.el8_6.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.6)
  • kpatch-patch-4_18_0-372_70_1-debugsource-0:1-4.el8_6.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.6)
  • kpatch-patch-4_18_0-372_75_1-0:1-3.el8_6.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.6)
  • kpatch-patch-4_18_0-372_75_1-0:1-3.el8_6.src as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.6)
  • kpatch-patch-4_18_0-372_75_1-0:1-3.el8_6.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.6)
  • kpatch-patch-4_18_0-372_75_1-debuginfo-0:1-3.el8_6.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.6)
  • kpatch-patch-4_18_0-372_75_1-debuginfo-0:1-3.el8_6.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.6)
  • kpatch-patch-4_18_0-372_75_1-debugsource-0:1-3.el8_6.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.6)
  • kpatch-patch-4_18_0-372_75_1-debugsource-0:1-3.el8_6.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.6)
  • kpatch-patch-4_18_0-372_80_1-0:1-2.el8_6.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.6)
  • kpatch-patch-4_18_0-372_80_1-0:1-2.el8_6.src as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.6)
  • kpatch-patch-4_18_0-372_80_1-0:1-2.el8_6.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.6)
  • kpatch-patch-4_18_0-372_80_1-debuginfo-0:1-2.el8_6.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.6)
  • kpatch-patch-4_18_0-372_80_1-debuginfo-0:1-2.el8_6.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.6)
  • kpatch-patch-4_18_0-372_80_1-debugsource-0:1-2.el8_6.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.6)
  • kpatch-patch-4_18_0-372_80_1-debugsource-0:1-2.el8_6.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.6)
  • kpatch-patch-4_18_0-372_87_1-0:1-1.el8_6.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.6)
  • +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: Mitigation for this issue is to skip loading the affected module sch_qfq onto the system until we have a fix available. This can be done by a blacklist mechanism and will ensure the driver is not loaded at the boot time. ~~~ How do I blacklist a kernel module to prevent it from loading automatically? https://access.redhat.com/solutions/41278 ~~~ Workaround: To mitigate this issue, prevent module tls from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.

🔗 References (5)