QID 354044

Date Published: 2022-08-22

QID 354044: Amazon Linux Security Advisory for kernel : ALAS2-2022-1833

An out-of-bounds write flaw was found in the linux kernel’s framebuffer-based console driver functionality in the way a user triggers ioctl fbioput_vscreeninfo with malicious data.
This flaw allows a local user to crash or potentially escalate their privileges on the system. (
( CVE-2021-33655) the linux kernel before 5.18.13 lacks a certain clear operation for the block starting symbol (.bss).
This allows xen pv guest os users to cause a denial of service or gain privileges. (
( CVE-2022-36123) an issue was discovered in the linux kernel through 5.18.14.
Xfrm_expand_policies in net/xfrm/xfrm_policy.c can cause a refcount to be dropped twice. (
( CVE-2022-36879)



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 - 7.8 severity.
  • CVSS V2 rated as Medium - 5.4 severity.
    • Solution
    Please refer to Amazon advisory: ALAS2-2022-1833 for affected packages and patching details, or update with your package manager.
    Vendor References

    CVEs related to QID 354044

    CVE-2022-36123 | CVE-2021-33655 | CVE-2022-36879 |
    Software Advisories
    Advisory ID Software Component Link
    ALAS2-2022-1833 Amazon Linux 2 URL Logo alas.aws.amazon.com/AL2/ALAS-2022-1833.html
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