RHSA-2023:6799HighCVSS 7.8

Red Hat Security Advisory: kpatch-patch security update

Published
November 8, 2023
Last Modified
July 30, 2026

🔗 CVE IDs covered (3)

CVE-2023-3812 →CVE-2023-3609 →CVE-2023-3776 →

📋 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-2023-3812 — kernel: tun: bugs for oversize packet when napi frags enabled in tun_napi_alloc_frags

🎯 Affected products29

  • Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
  • kpatch-patch-4_18_0-147_83_1-0:1-5.el8_1.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
  • kpatch-patch-4_18_0-147_83_1-0:1-5.el8_1.src as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
  • kpatch-patch-4_18_0-147_83_1-0:1-5.el8_1.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
  • kpatch-patch-4_18_0-147_83_1-debuginfo-0:1-5.el8_1.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
  • kpatch-patch-4_18_0-147_83_1-debuginfo-0:1-5.el8_1.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
  • kpatch-patch-4_18_0-147_83_1-debugsource-0:1-5.el8_1.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
  • kpatch-patch-4_18_0-147_83_1-debugsource-0:1-5.el8_1.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
  • kpatch-patch-4_18_0-147_85_1-0:1-3.el8_1.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
  • kpatch-patch-4_18_0-147_85_1-0:1-3.el8_1.src as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
  • kpatch-patch-4_18_0-147_85_1-0:1-3.el8_1.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
  • kpatch-patch-4_18_0-147_85_1-debuginfo-0:1-3.el8_1.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
  • kpatch-patch-4_18_0-147_85_1-debuginfo-0:1-3.el8_1.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
  • kpatch-patch-4_18_0-147_85_1-debugsource-0:1-3.el8_1.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
  • kpatch-patch-4_18_0-147_85_1-debugsource-0:1-3.el8_1.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
  • kpatch-patch-4_18_0-147_87_1-0:1-2.el8_1.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
  • kpatch-patch-4_18_0-147_87_1-0:1-2.el8_1.src as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
  • kpatch-patch-4_18_0-147_87_1-0:1-2.el8_1.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
  • kpatch-patch-4_18_0-147_87_1-debuginfo-0:1-2.el8_1.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
  • kpatch-patch-4_18_0-147_87_1-debuginfo-0:1-2.el8_1.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
  • kpatch-patch-4_18_0-147_87_1-debugsource-0:1-2.el8_1.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
  • kpatch-patch-4_18_0-147_87_1-debugsource-0:1-2.el8_1.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
  • kpatch-patch-4_18_0-147_90_1-0:1-1.el8_1.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
  • kpatch-patch-4_18_0-147_90_1-0:1-1.el8_1.src as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
  • kpatch-patch-4_18_0-147_90_1-0:1-1.el8_1.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
  • kpatch-patch-4_18_0-147_90_1-debuginfo-0:1-1.el8_1.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
  • kpatch-patch-4_18_0-147_90_1-debuginfo-0:1-1.el8_1.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
  • kpatch-patch-4_18_0-147_90_1-debugsource-0:1-1.el8_1.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)
  • kpatch-patch-4_18_0-147_90_1-debugsource-0:1-1.el8_1.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.1)

✅ 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. Workaround: To mitigate this issue, prevent the tun module 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)