RHSA-2022:6991HighCVSS 7.8

Red Hat Security Advisory: kernel-rt security and bug fix update

Published
October 18, 2022
Last Modified
August 5, 2026

🔗 CVE IDs covered (6)

CVE-2022-21166 →CVE-2021-45485 →CVE-2021-45486 →CVE-2022-2588 →CVE-2022-21123 →CVE-2022-21125 →

📋 Description

CVE-2021-45485 — kernel: information leak in the IPv6 implementation CVE-2021-45486 — kernel: information leak in the IPv4 implementation CVE-2022-2588 — kernel: a use-after-free in cls_route filter implementation may lead to privilege escalation CVE-2022-21123 — hw: cpu: incomplete clean-up of multi-core shared buffers (aka SBDR) CVE-2022-21125 — hw: cpu: incomplete clean-up of microarchitectural fill buffers (aka SBDS) CVE-2022-21166 — hw: cpu: incomplete clean-up in specific special register write operations (aka DRPW)

🎯 Affected products32

  • Red Hat Enterprise Linux NFV EUS (v.8.4)
  • Red Hat Enterprise Linux RT EUS (v.8.4)
  • kernel-rt-0:4.18.0-305.65.1.rt7.137.el8_4.src as a component of Red Hat Enterprise Linux NFV EUS (v.8.4)
  • kernel-rt-0:4.18.0-305.65.1.rt7.137.el8_4.src as a component of Red Hat Enterprise Linux RT EUS (v.8.4)
  • kernel-rt-0:4.18.0-305.65.1.rt7.137.el8_4.x86_64 as a component of Red Hat Enterprise Linux NFV EUS (v.8.4)
  • kernel-rt-0:4.18.0-305.65.1.rt7.137.el8_4.x86_64 as a component of Red Hat Enterprise Linux RT EUS (v.8.4)
  • kernel-rt-core-0:4.18.0-305.65.1.rt7.137.el8_4.x86_64 as a component of Red Hat Enterprise Linux NFV EUS (v.8.4)
  • kernel-rt-core-0:4.18.0-305.65.1.rt7.137.el8_4.x86_64 as a component of Red Hat Enterprise Linux RT EUS (v.8.4)
  • kernel-rt-debug-0:4.18.0-305.65.1.rt7.137.el8_4.x86_64 as a component of Red Hat Enterprise Linux NFV EUS (v.8.4)
  • kernel-rt-debug-0:4.18.0-305.65.1.rt7.137.el8_4.x86_64 as a component of Red Hat Enterprise Linux RT EUS (v.8.4)
  • kernel-rt-debug-core-0:4.18.0-305.65.1.rt7.137.el8_4.x86_64 as a component of Red Hat Enterprise Linux NFV EUS (v.8.4)
  • kernel-rt-debug-core-0:4.18.0-305.65.1.rt7.137.el8_4.x86_64 as a component of Red Hat Enterprise Linux RT EUS (v.8.4)
  • kernel-rt-debug-debuginfo-0:4.18.0-305.65.1.rt7.137.el8_4.x86_64 as a component of Red Hat Enterprise Linux NFV EUS (v.8.4)
  • kernel-rt-debug-debuginfo-0:4.18.0-305.65.1.rt7.137.el8_4.x86_64 as a component of Red Hat Enterprise Linux RT EUS (v.8.4)
  • kernel-rt-debug-devel-0:4.18.0-305.65.1.rt7.137.el8_4.x86_64 as a component of Red Hat Enterprise Linux NFV EUS (v.8.4)
  • kernel-rt-debug-devel-0:4.18.0-305.65.1.rt7.137.el8_4.x86_64 as a component of Red Hat Enterprise Linux RT EUS (v.8.4)
  • kernel-rt-debug-kvm-0:4.18.0-305.65.1.rt7.137.el8_4.x86_64 as a component of Red Hat Enterprise Linux NFV EUS (v.8.4)
  • kernel-rt-debug-modules-0:4.18.0-305.65.1.rt7.137.el8_4.x86_64 as a component of Red Hat Enterprise Linux NFV EUS (v.8.4)
  • kernel-rt-debug-modules-0:4.18.0-305.65.1.rt7.137.el8_4.x86_64 as a component of Red Hat Enterprise Linux RT EUS (v.8.4)
  • kernel-rt-debug-modules-extra-0:4.18.0-305.65.1.rt7.137.el8_4.x86_64 as a component of Red Hat Enterprise Linux NFV EUS (v.8.4)
  • kernel-rt-debug-modules-extra-0:4.18.0-305.65.1.rt7.137.el8_4.x86_64 as a component of Red Hat Enterprise Linux RT EUS (v.8.4)
  • kernel-rt-debuginfo-0:4.18.0-305.65.1.rt7.137.el8_4.x86_64 as a component of Red Hat Enterprise Linux NFV EUS (v.8.4)
  • kernel-rt-debuginfo-0:4.18.0-305.65.1.rt7.137.el8_4.x86_64 as a component of Red Hat Enterprise Linux RT EUS (v.8.4)
  • kernel-rt-debuginfo-common-x86_64-0:4.18.0-305.65.1.rt7.137.el8_4.x86_64 as a component of Red Hat Enterprise Linux NFV EUS (v.8.4)
  • kernel-rt-debuginfo-common-x86_64-0:4.18.0-305.65.1.rt7.137.el8_4.x86_64 as a component of Red Hat Enterprise Linux RT EUS (v.8.4)
  • kernel-rt-devel-0:4.18.0-305.65.1.rt7.137.el8_4.x86_64 as a component of Red Hat Enterprise Linux NFV EUS (v.8.4)
  • kernel-rt-devel-0:4.18.0-305.65.1.rt7.137.el8_4.x86_64 as a component of Red Hat Enterprise Linux RT EUS (v.8.4)
  • kernel-rt-kvm-0:4.18.0-305.65.1.rt7.137.el8_4.x86_64 as a component of Red Hat Enterprise Linux NFV EUS (v.8.4)
  • kernel-rt-modules-0:4.18.0-305.65.1.rt7.137.el8_4.x86_64 as a component of Red Hat Enterprise Linux NFV EUS (v.8.4)
  • kernel-rt-modules-0:4.18.0-305.65.1.rt7.137.el8_4.x86_64 as a component of Red Hat Enterprise Linux RT EUS (v.8.4)
  • +2 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 The system must be rebooted for this update to take effect. 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 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 baser or stability.

🔗 References (9)