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ALAS2KERNEL-5.10-2023-027

Related Vulnerabilities: CVE-2022-4129  

A flaw was found in the Linux kernel's Layer 2 Tunneling Protocol (L2TP). A missing lock when clearing sk_user_data can lead to a race condition and NULL pointer dereference. A local user could use this flaw to potentially crash the system causing a denial of service. (CVE-2022-4129)

Source

ALAS2KERNEL-5.10-2023-027

Amazon Linux 2 Security Advisory: ALASKERNEL-5.10-2023-027
Advisory Release Date: 2023-03-17 16:46 Pacific
Advisory Updated Date: 2023-03-21 21:44 Pacific
Severity: Medium
Issue Overview:

A flaw was found in the Linux kernel's Layer 2 Tunneling Protocol (L2TP). A missing lock when clearing sk_user_data can lead to a race condition and NULL pointer dereference. A local user could use this flaw to potentially crash the system causing a denial of service. (CVE-2022-4129)


Affected Packages:

kernel


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

New Packages:
aarch64:
    kernel-5.10.167-147.601.amzn2.aarch64
    kernel-headers-5.10.167-147.601.amzn2.aarch64
    kernel-debuginfo-common-aarch64-5.10.167-147.601.amzn2.aarch64
    perf-5.10.167-147.601.amzn2.aarch64
    perf-debuginfo-5.10.167-147.601.amzn2.aarch64
    python-perf-5.10.167-147.601.amzn2.aarch64
    python-perf-debuginfo-5.10.167-147.601.amzn2.aarch64
    kernel-tools-5.10.167-147.601.amzn2.aarch64
    kernel-tools-devel-5.10.167-147.601.amzn2.aarch64
    kernel-tools-debuginfo-5.10.167-147.601.amzn2.aarch64
    bpftool-5.10.167-147.601.amzn2.aarch64
    bpftool-debuginfo-5.10.167-147.601.amzn2.aarch64
    kernel-devel-5.10.167-147.601.amzn2.aarch64
    kernel-debuginfo-5.10.167-147.601.amzn2.aarch64
    kernel-livepatch-5.10.167-147.601-1.0-0.amzn2.aarch64

i686:
    kernel-headers-5.10.167-147.601.amzn2.i686

src:
    kernel-5.10.167-147.601.amzn2.src

x86_64:
    kernel-5.10.167-147.601.amzn2.x86_64
    kernel-headers-5.10.167-147.601.amzn2.x86_64
    kernel-debuginfo-common-x86_64-5.10.167-147.601.amzn2.x86_64
    perf-5.10.167-147.601.amzn2.x86_64
    perf-debuginfo-5.10.167-147.601.amzn2.x86_64
    python-perf-5.10.167-147.601.amzn2.x86_64
    python-perf-debuginfo-5.10.167-147.601.amzn2.x86_64
    kernel-tools-5.10.167-147.601.amzn2.x86_64
    kernel-tools-devel-5.10.167-147.601.amzn2.x86_64
    kernel-tools-debuginfo-5.10.167-147.601.amzn2.x86_64
    bpftool-5.10.167-147.601.amzn2.x86_64
    bpftool-debuginfo-5.10.167-147.601.amzn2.x86_64
    kernel-devel-5.10.167-147.601.amzn2.x86_64
    kernel-debuginfo-5.10.167-147.601.amzn2.x86_64
    kernel-livepatch-5.10.167-147.601-1.0-0.amzn2.x86_64

Additional References

Red Hat: CVE-2022-4129

Mitre: CVE-2022-4129

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