RHSA-2023:7558HighCVSS 7.8

Red Hat Security Advisory: kpatch-patch security update

Published
November 28, 2023
Last Modified
July 30, 2026

🔗 CVE IDs covered (6)

CVE-2023-4207 →CVE-2023-4208 →CVE-2023-42753 →CVE-2023-3609 →CVE-2023-4128 · pendingCVE-2023-4206 →

📋 Description

CVE-2023-3609 — kernel: net/sched: cls_u32 component reference counter leak if tcf_change_indev() fails CVE-2023-4128 — kernel: net/sched: Use-after-free vulnerabilities in the net/sched classifiers: cls_fw, cls_u32 and cls_route CVE-2023-4206 — kernel: net/sched: Use-after-free vulnerabilities in the net/sched classifiers: cls_fw, cls_u32 and cls_route CVE-2023-4207 — kernel: net/sched: Use-after-free vulnerabilities in the net/sched classifiers: cls_fw, cls_u32 and cls_route CVE-2023-4208 — kernel: net/sched: Use-after-free vulnerabilities in the net/sched classifiers: cls_fw, cls_u32 and cls_route CVE-2023-42753 — kernel: netfilter: potential slab-out-of-bound access due to integer underflow

🎯 Affected products36

  • Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kpatch-patch-4_18_0-477_10_1-0:1-4.el8_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kpatch-patch-4_18_0-477_10_1-0:1-4.el8_8.src as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kpatch-patch-4_18_0-477_10_1-0:1-4.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kpatch-patch-4_18_0-477_10_1-debuginfo-0:1-4.el8_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kpatch-patch-4_18_0-477_10_1-debuginfo-0:1-4.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kpatch-patch-4_18_0-477_10_1-debugsource-0:1-4.el8_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kpatch-patch-4_18_0-477_10_1-debugsource-0:1-4.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kpatch-patch-4_18_0-477_13_1-0:1-3.el8_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kpatch-patch-4_18_0-477_13_1-0:1-3.el8_8.src as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kpatch-patch-4_18_0-477_13_1-0:1-3.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kpatch-patch-4_18_0-477_13_1-debuginfo-0:1-3.el8_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kpatch-patch-4_18_0-477_13_1-debuginfo-0:1-3.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kpatch-patch-4_18_0-477_13_1-debugsource-0:1-3.el8_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kpatch-patch-4_18_0-477_13_1-debugsource-0:1-3.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kpatch-patch-4_18_0-477_15_1-0:1-3.el8_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kpatch-patch-4_18_0-477_15_1-0:1-3.el8_8.src as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kpatch-patch-4_18_0-477_15_1-0:1-3.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kpatch-patch-4_18_0-477_15_1-debuginfo-0:1-3.el8_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kpatch-patch-4_18_0-477_15_1-debuginfo-0:1-3.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kpatch-patch-4_18_0-477_15_1-debugsource-0:1-3.el8_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kpatch-patch-4_18_0-477_15_1-debugsource-0:1-3.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kpatch-patch-4_18_0-477_21_1-0:1-2.el8_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kpatch-patch-4_18_0-477_21_1-0:1-2.el8_8.src as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kpatch-patch-4_18_0-477_21_1-0:1-2.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kpatch-patch-4_18_0-477_21_1-debuginfo-0:1-2.el8_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kpatch-patch-4_18_0-477_21_1-debuginfo-0:1-2.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kpatch-patch-4_18_0-477_21_1-debugsource-0:1-2.el8_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kpatch-patch-4_18_0-477_21_1-debugsource-0:1-2.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kpatch-patch-4_18_0-477_27_1-0:1-1.el8_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • +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: To mitigate this issue, prevent module cls_u32 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: To mitigate this issue, prevent the module cls_u32 from being loaded by blacklisting the module to prevent it from loading automatically. ~~~ https://access.redhat.com/solutions/41278 ~~~ Workaround: Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.

🔗 References (6)