QID 241009

Date Published: 2022-12-14

QID 241009: Red Hat Update for kernel-rt (RHSA-2022:8974)

The kernel-rt packages provide the real time linux kernel, which enables fine-tuning for systems with extremely high determinism requirements...Security Fix(es):

    kernel: kvm: cmpxchg_gpte can write to pfns outside the userspace region (cve-2022-1158).
    Kernel: openvswitch: integer underflow leads to out-of-bounds write in reserve_sfa_size() (cve-2022-2639).
    Kernel: watch queue race condition can lead to privilege escalation (cve-2022-2959).
    Kernel: nfsd buffer overflow by rpc message over tcp with garbage data (cve-2022-43945).
    Hw: cpu: incomplete clean-up of multi-core shared buffers (aka sbdr) (cve-2022-21123).
    Hw: cpu: incomplete clean-up of microarchitectural fill buffers (aka sbds) (cve-2022-21125).
    Hw: cpu: incomplete clean-up in specific special register write operations (aka drpw) (cve-2022-21166).
    Hw: cpu: amd: retbleed arbitrary speculative code execution with return instructions (cve-2022-23816, cve-2022-29900).
    Hw: cpu: amd: branch type confusion (non-retbleed) (cve-2022-23825).
    Hw: cpu: intel: post-barrier return stack buffer predictions (cve-2022-26373).
    Hw: cpu: intel: retbleed arbitrary speculative code execution with return instructions (cve-2022-29901).
Affected Products:
    Red Hat enterprise linux for real time for x86_64 - 4 years of updates 9.0 x86_64.
    Red hat enterprise linux for real time for nfv for x86_64 - 4 years of updates 9.0 x86_64.
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Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

Successful exploitation of this vulnerability could lead to a security breach or could affect integrity, availability, and confidentiality.

  • CVSS V3 rated as High - 7.8 severity.
  • CVSS V2 rated as Low - 2.1 severity.
    • Solution
    Refer to Red Hat security advisory RHSA-2022:8974 for updates and patch information.
    Vendor References

    CVEs related to QID 241009

    CVE-2022-1158 | CVE-2022-2639 | CVE-2022-2959 | CVE-2022-21123 | CVE-2022-21125 | CVE-2022-21166 | CVE-2022-23816 | CVE-2022-23825 | CVE-2022-26373 | CVE-2022-29900 | CVE-2022-29901 | CVE-2022-43945 |
    Software Advisories
    Advisory ID Software Component Link
    RHSA-2022:8974 Red Hat Enterprise Linux URL Logo access.redhat.com/errata/RHSA-2022:8974
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