RHSA-2022:1103HighCVSS 7.4

Red Hat Security Advisory: kpatch-patch security update

Published
March 29, 2022
Last Modified
August 7, 2026

🔗 CVE IDs covered (4)

CVE-2021-0920 →CVE-2021-4083 →CVE-2022-0330 →CVE-2022-22942 →

📋 Description

CVE-2021-0920 — kernel: Use After Free in unix_gc() which could result in a local privilege escalation CVE-2021-4083 — kernel: fget: check that the fd still exists after getting a ref to it CVE-2022-0330 — kernel: possible privileges escalation due to missing TLB flush CVE-2022-22942 — kernel: failing usercopy allows for use-after-free exploitation

🎯 Affected products36

  • Red Hat Enterprise Linux Server E4S (v. 7.6)
  • kpatch-patch-3_10_0-957_72_1-0:1-6.el7.ppc64le as a component of Red Hat Enterprise Linux Server E4S (v. 7.6)
  • kpatch-patch-3_10_0-957_72_1-0:1-6.el7.src as a component of Red Hat Enterprise Linux Server E4S (v. 7.6)
  • kpatch-patch-3_10_0-957_72_1-0:1-6.el7.x86_64 as a component of Red Hat Enterprise Linux Server E4S (v. 7.6)
  • kpatch-patch-3_10_0-957_72_1-debuginfo-0:1-6.el7.ppc64le as a component of Red Hat Enterprise Linux Server E4S (v. 7.6)
  • kpatch-patch-3_10_0-957_72_1-debuginfo-0:1-6.el7.x86_64 as a component of Red Hat Enterprise Linux Server E4S (v. 7.6)
  • kpatch-patch-3_10_0-957_76_1-0:1-6.el7.ppc64le as a component of Red Hat Enterprise Linux Server E4S (v. 7.6)
  • kpatch-patch-3_10_0-957_76_1-0:1-6.el7.src as a component of Red Hat Enterprise Linux Server E4S (v. 7.6)
  • kpatch-patch-3_10_0-957_76_1-0:1-6.el7.x86_64 as a component of Red Hat Enterprise Linux Server E4S (v. 7.6)
  • kpatch-patch-3_10_0-957_76_1-debuginfo-0:1-6.el7.ppc64le as a component of Red Hat Enterprise Linux Server E4S (v. 7.6)
  • kpatch-patch-3_10_0-957_76_1-debuginfo-0:1-6.el7.x86_64 as a component of Red Hat Enterprise Linux Server E4S (v. 7.6)
  • kpatch-patch-3_10_0-957_78_2-0:1-5.el7.ppc64le as a component of Red Hat Enterprise Linux Server E4S (v. 7.6)
  • kpatch-patch-3_10_0-957_78_2-0:1-5.el7.src as a component of Red Hat Enterprise Linux Server E4S (v. 7.6)
  • kpatch-patch-3_10_0-957_78_2-0:1-5.el7.x86_64 as a component of Red Hat Enterprise Linux Server E4S (v. 7.6)
  • kpatch-patch-3_10_0-957_78_2-debuginfo-0:1-5.el7.ppc64le as a component of Red Hat Enterprise Linux Server E4S (v. 7.6)
  • kpatch-patch-3_10_0-957_78_2-debuginfo-0:1-5.el7.x86_64 as a component of Red Hat Enterprise Linux Server E4S (v. 7.6)
  • kpatch-patch-3_10_0-957_80_1-0:1-4.el7.ppc64le as a component of Red Hat Enterprise Linux Server E4S (v. 7.6)
  • kpatch-patch-3_10_0-957_80_1-0:1-4.el7.src as a component of Red Hat Enterprise Linux Server E4S (v. 7.6)
  • kpatch-patch-3_10_0-957_80_1-0:1-4.el7.x86_64 as a component of Red Hat Enterprise Linux Server E4S (v. 7.6)
  • kpatch-patch-3_10_0-957_80_1-debuginfo-0:1-4.el7.ppc64le as a component of Red Hat Enterprise Linux Server E4S (v. 7.6)
  • kpatch-patch-3_10_0-957_80_1-debuginfo-0:1-4.el7.x86_64 as a component of Red Hat Enterprise Linux Server E4S (v. 7.6)
  • kpatch-patch-3_10_0-957_84_1-0:1-3.el7.ppc64le as a component of Red Hat Enterprise Linux Server E4S (v. 7.6)
  • kpatch-patch-3_10_0-957_84_1-0:1-3.el7.src as a component of Red Hat Enterprise Linux Server E4S (v. 7.6)
  • kpatch-patch-3_10_0-957_84_1-0:1-3.el7.x86_64 as a component of Red Hat Enterprise Linux Server E4S (v. 7.6)
  • kpatch-patch-3_10_0-957_84_1-debuginfo-0:1-3.el7.ppc64le as a component of Red Hat Enterprise Linux Server E4S (v. 7.6)
  • kpatch-patch-3_10_0-957_84_1-debuginfo-0:1-3.el7.x86_64 as a component of Red Hat Enterprise Linux Server E4S (v. 7.6)
  • kpatch-patch-3_10_0-957_86_1-0:1-2.el7.ppc64le as a component of Red Hat Enterprise Linux Server E4S (v. 7.6)
  • kpatch-patch-3_10_0-957_86_1-0:1-2.el7.src as a component of Red Hat Enterprise Linux Server E4S (v. 7.6)
  • kpatch-patch-3_10_0-957_86_1-0:1-2.el7.x86_64 as a component of Red Hat Enterprise Linux Server E4S (v. 7.6)
  • kpatch-patch-3_10_0-957_86_1-debuginfo-0:1-2.el7.ppc64le as a component of Red Hat Enterprise Linux Server E4S (v. 7.6)
  • +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 either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability. Workaround: Mitigation for this issue is to skip loading the affected module vmwgfx onto the system until we have a fix available. This can be done by a blacklist mechanism and ensures 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 ~~~

🔗 References (7)