RHSA-2023:5775HighCVSS 7.8

Red Hat Security Advisory: kpatch-patch security update

Published
October 17, 2023
Last Modified
July 30, 2026

🔗 CVE IDs covered (3)

CVE-2023-3609 →CVE-2023-3776 →CVE-2023-4128 · pending

📋 Description

CVE-2023-3609 — kernel: net/sched: cls_u32 component reference counter leak if tcf_change_indev() fails CVE-2023-3776 — kernel: net/sched: cls_fw component can be exploited as result of failure in tcf_change_indev function CVE-2023-4128 — kernel: net/sched: Use-after-free vulnerabilities in the net/sched classifiers: cls_fw, cls_u32 and cls_route

🎯 Affected products43

  • Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_103_1-0:1-1.el8_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_103_1-0:1-1.el8_4.src as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_103_1-0:1-1.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_103_1-debuginfo-0:1-1.el8_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_103_1-debuginfo-0:1-1.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_103_1-debugsource-0:1-1.el8_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_103_1-debugsource-0:1-1.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_82_1-0:1-5.el8_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_82_1-0:1-5.el8_4.src as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_82_1-0:1-5.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_82_1-debuginfo-0:1-5.el8_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_82_1-debuginfo-0:1-5.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_82_1-debugsource-0:1-5.el8_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_82_1-debugsource-0:1-5.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_86_2-0:1-4.el8_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_86_2-0:1-4.el8_4.src as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_86_2-0:1-4.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_86_2-debuginfo-0:1-4.el8_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_86_2-debuginfo-0:1-4.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_86_2-debugsource-0:1-4.el8_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_86_2-debugsource-0:1-4.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_88_1-0:1-4.el8_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_88_1-0:1-4.el8_4.src as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_88_1-0:1-4.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_88_1-debuginfo-0:1-4.el8_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_88_1-debuginfo-0:1-4.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_88_1-debugsource-0:1-4.el8_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_88_1-debugsource-0:1-4.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • kpatch-patch-4_18_0-305_91_1-0:1-3.el8_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.4)
  • +13 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 module cls_fw 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 (6)