RHSA-2022:8974HighCVSS 7.8

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

Published
December 13, 2022
Last Modified
August 7, 2026

🔗 CVE IDs covered (13)

CVE-2022-2639 →CVE-2022-2959 →CVE-2022-21123 →CVE-2022-21125 →CVE-2022-21166 →CVE-2022-23816 · pendingCVE-2022-29900 →CVE-2022-29901 →CVE-2022-1158 →CVE-2022-23825 →CVE-2022-26373 →CVE-2022-28693 →CVE-2022-43945 →

📋 Description

CVE-2022-1158 — kernel: KVM: cmpxchg_gpte can write to pfns outside the userspace region CVE-2022-2639 — kernel: openvswitch: integer underflow leads to out-of-bounds write in reserve_sfa_size() CVE-2022-2959 — kernel: watch queue race condition can 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) CVE-2022-23816 — hw: cpu: AMD: RetBleed Arbitrary Speculative Code Execution with Return Instructions CVE-2022-23825 — hw: cpu: AMD: Branch Type Confusion (non-retbleed) CVE-2022-26373 — hw: cpu: Intel: Post-barrier Return Stack Buffer Predictions CVE-2022-28693 — hw: cpu: Intel: information disclosure via local access CVE-2022-29900 — hw: cpu: AMD: RetBleed Arbitrary Speculative Code Execution with Return Instructions CVE-2022-29901 — hw: cpu: Intel: RetBleed Arbitrary Speculative Code Execution with Return Instructions CVE-2022-43945 — kernel: nfsd buffer overflow by RPC message over TCP with garbage data

🎯 Affected products32

  • Red Hat Enterprise Linux Real Time EUS (v.9.0)
  • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0)
  • kernel-rt-0:5.14.0-70.36.1.rt21.108.el9_0.src as a component of Red Hat Enterprise Linux Real Time EUS (v.9.0)
  • kernel-rt-0:5.14.0-70.36.1.rt21.108.el9_0.src as a component of Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0)
  • kernel-rt-0:5.14.0-70.36.1.rt21.108.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time EUS (v.9.0)
  • kernel-rt-0:5.14.0-70.36.1.rt21.108.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0)
  • kernel-rt-core-0:5.14.0-70.36.1.rt21.108.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time EUS (v.9.0)
  • kernel-rt-core-0:5.14.0-70.36.1.rt21.108.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0)
  • kernel-rt-debug-0:5.14.0-70.36.1.rt21.108.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time EUS (v.9.0)
  • kernel-rt-debug-0:5.14.0-70.36.1.rt21.108.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0)
  • kernel-rt-debug-core-0:5.14.0-70.36.1.rt21.108.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time EUS (v.9.0)
  • kernel-rt-debug-core-0:5.14.0-70.36.1.rt21.108.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0)
  • kernel-rt-debug-debuginfo-0:5.14.0-70.36.1.rt21.108.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time EUS (v.9.0)
  • kernel-rt-debug-debuginfo-0:5.14.0-70.36.1.rt21.108.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0)
  • kernel-rt-debug-devel-0:5.14.0-70.36.1.rt21.108.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time EUS (v.9.0)
  • kernel-rt-debug-devel-0:5.14.0-70.36.1.rt21.108.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0)
  • kernel-rt-debug-kvm-0:5.14.0-70.36.1.rt21.108.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0)
  • kernel-rt-debug-modules-0:5.14.0-70.36.1.rt21.108.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time EUS (v.9.0)
  • kernel-rt-debug-modules-0:5.14.0-70.36.1.rt21.108.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0)
  • kernel-rt-debug-modules-extra-0:5.14.0-70.36.1.rt21.108.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time EUS (v.9.0)
  • kernel-rt-debug-modules-extra-0:5.14.0-70.36.1.rt21.108.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0)
  • kernel-rt-debuginfo-0:5.14.0-70.36.1.rt21.108.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time EUS (v.9.0)
  • kernel-rt-debuginfo-0:5.14.0-70.36.1.rt21.108.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0)
  • kernel-rt-debuginfo-common-x86_64-0:5.14.0-70.36.1.rt21.108.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time EUS (v.9.0)
  • kernel-rt-debuginfo-common-x86_64-0:5.14.0-70.36.1.rt21.108.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0)
  • kernel-rt-devel-0:5.14.0-70.36.1.rt21.108.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time EUS (v.9.0)
  • kernel-rt-devel-0:5.14.0-70.36.1.rt21.108.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0)
  • kernel-rt-kvm-0:5.14.0-70.36.1.rt21.108.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0)
  • kernel-rt-modules-0:5.14.0-70.36.1.rt21.108.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time EUS (v.9.0)
  • kernel-rt-modules-0:5.14.0-70.36.1.rt21.108.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0)
  • +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: 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. Workaround: To mitigate this issue, it is possible to prevent the affected code from being loaded by blocklisting the openvswitch kernel module. For instructions relating to blocklisting a kernel module, please see https://access.redhat.com/solutions/41278. 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 (15)