QID 355088

Date Published: 2023-05-18

QID 355088: Amazon Linux Security Advisory for kernel : ALAS2KERNEL-5.4-2023-045

A use-after-free vulnerability was found in the linux kernel's ext4 filesystem in the way it handled the extra inode size for extended attributes.
This flaw could allow a privileged local user to cause a system crash or other undefined behaviors. (
( CVE-2023-2513) qfq_change_class in net/sched/sch_qfq.c in the linux kernel before 6.2.13 allows an out-of-bounds write because lmax can exceed qfq_min_lmax. (
( CVE-2023-31436)



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: ALAS2KERNEL-5.4-2023-045 for affected packages and patching details, or update with your package manager.
    Vendor References

    CVEs related to QID 355088

    CVE-2023-31436 | CVE-2023-2513 |
    Software Advisories
    Advisory ID Software Component Link
    ALAS2KERNEL-5.4-2023-045 amazon linux 2 URL Logo alas.aws.amazon.com/AL2/ALASKERNEL-5.4-2023-045.html
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