QID 354050

Date Published: 2022-08-24

QID 354050: Amazon Linux Security Advisory for kernel : ALAS2KERNEL-5.15-2022-006

A flaw was found in hw.
Mis-trained branch predictions for return instructions may allow arbitrary speculative code execution under certain microarchitecture-dependent conditions. (
( CVE-2022-23816) a flaw was found in hw.
Aliases in the branch predictor may cause some amd processors to predict the wrong branch type, potentially leading to information disclosure. (
( CVE-2022-23825) a flaw was found in hw.
In certain processors with intel's enhanced indirect branch restricted speculation (eibrs) capabilities, soon after vm exit or ibpb command event, the linear address following the most recent near call instruction prior to a vm exit may be used as the return stack buffer (rsb) prediction. (
( CVE-2022-26373) a flaw was found in hw.
The unprotected alternative channel of return branch target prediction in some intel(r) processors may allow an authorized user to enable information disclosure via local access. (
( CVE-2022-28693) a flaw was found in hw.
( CVE-2022-29900) a flaw was found in hw.
Non-transparent sharing of branch predictor targets between contexts in some intel(r) processors may potentially allow an authorized user to enable information disclosure via local access. (
( CVE-2022-29901)



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 securitybreach or could affect integrity, availability, and confidentiality.

  • CVSS V3 rated as High - 6.5 severity.
  • CVSS V2 rated as Low - 2.1 severity.
    • Solution
    Please refer to Amazon advisory: ALAS2KERNEL-5.15-2022-006 for affected packages and patching details, or update with your package manager.
    Vendor References

    CVEs related to QID 354050

    CVE-2022-26373 | CVE-2022-23816 | CVE-2022-23825 | CVE-2022-28693 | CVE-2022-29900 | CVE-2022-29901 |
    Software Advisories
    Advisory ID Software Component Link
    ALAS2KERNEL-5.15-2022-006 Amazon Linux 2 URL Logo alas.aws.amazon.com/AL2/ALASKERNEL-5.15-2022-006.html
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