QID 353188

Date Published: 2022-03-09

QID 353188: Amazon Linux Security Advisory for kernel-livepatch : ALAS2LIVEPATCH-2022-076

A data leak flaw was found in the way xfs_ioc_allocsp ioctl in the xfs filesystem allowed for size increase of files with unaligned size.
A local attacker could use this flaw to leak data on the xfs filesystem otherwise not accessible to them. (
( CVE-2021-4155) a heap-based buffer overflow flaw was found in the way the legacy_parse_param function in the filesystem context functionality of the linux kernel verified the supplied parameters length.
An unprivileged (in case of unprivileged user namespaces enabled, otherwise needs namespaced cap_sys_admin privilege) local user able to open a filesystem that does not support the filesystem context api (and thus fallbacks to legacy handling) could use this flaw to escalate their privileges on the system. (
( CVE-2022-0185)



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 Critical - 8.4 severity.
  • CVSS V2 rated as High - 7.2 severity.
    • Solution
    Please refer to Amazon advisory: ALAS2LIVEPATCH-2022-076 for affected packages and patching details, or update with your package manager.
    Vendor References

    CVEs related to QID 353188

    CVE-2021-4155 | CVE-2022-0185 |
    Software Advisories
    Advisory ID Software Component Link
    ALAS2LIVEPATCH-2022-076 Amazon Linux 2 URL Logo alas.aws.amazon.com/AL2/ALASLIVEPATCH-2022-076.html
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