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ALAS-2023-1744

Related Vulnerabilities: CVE-2023-2513   CVE-2023-31436  

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)

Source

ALAS-2023-1744

Amazon Linux AMI Security Advisory: ALAS-2023-1744
Advisory Release Date: 2023-05-11 18:00 Pacific
Advisory Updated Date: 2023-05-23 20:54 Pacific
Severity: Medium
Issue Overview:

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)


Affected Packages:

kernel


Issue Correction:
Run yum update kernel to update your system.

New Packages:
i686:
    kernel-4.14.314-164.533.amzn1.i686
    kernel-tools-debuginfo-4.14.314-164.533.amzn1.i686
    kernel-debuginfo-4.14.314-164.533.amzn1.i686
    kernel-tools-devel-4.14.314-164.533.amzn1.i686
    kernel-devel-4.14.314-164.533.amzn1.i686
    kernel-tools-4.14.314-164.533.amzn1.i686
    kernel-headers-4.14.314-164.533.amzn1.i686
    perf-debuginfo-4.14.314-164.533.amzn1.i686
    kernel-debuginfo-common-i686-4.14.314-164.533.amzn1.i686
    perf-4.14.314-164.533.amzn1.i686

src:
    kernel-4.14.314-164.533.amzn1.src

x86_64:
    kernel-headers-4.14.314-164.533.amzn1.x86_64
    perf-4.14.314-164.533.amzn1.x86_64
    kernel-debuginfo-common-x86_64-4.14.314-164.533.amzn1.x86_64
    kernel-tools-4.14.314-164.533.amzn1.x86_64
    kernel-debuginfo-4.14.314-164.533.amzn1.x86_64
    kernel-4.14.314-164.533.amzn1.x86_64
    perf-debuginfo-4.14.314-164.533.amzn1.x86_64
    kernel-devel-4.14.314-164.533.amzn1.x86_64
    kernel-tools-debuginfo-4.14.314-164.533.amzn1.x86_64
    kernel-tools-devel-4.14.314-164.533.amzn1.x86_64

Additional References

Red Hat: CVE-2023-2513, CVE-2023-31436

Mitre: CVE-2023-2513, CVE-2023-31436

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