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OpenAdvisories
Medium ALAS2023-2026-1987 1 CVE

Moderate: kernel6.12 security update (Amazon Linux 2023)

Published Jul 20, 2026 · Updated Jul 20, 2026

Ecosystem: Amazon Linux

Summary

Package updates are available for Amazon Linux 2023 that fix the following vulnerabilities: CVE-2026-53163: In the Linux kernel, the following vulnerability has been resolved: locking/rtmutex: Skip remove_waiter() when waiter is not enqueued

Fixed packages 18

ReleasePackageFixed in
Amazon Linux · 2023 bpftool6.12 1:6.12.94-123.180.amzn2023
Amazon Linux · 2023 bpftool6.12-debuginfo 1:6.12.94-123.180.amzn2023
Amazon Linux · 2023 kernel-livepatch-6.12.94-123.180 1:1.0-0.amzn2023
Amazon Linux · 2023 kernel6.12 1:6.12.94-123.180.amzn2023
Amazon Linux · 2023 kernel6.12-debuginfo 1:6.12.94-123.180.amzn2023
Amazon Linux · 2023 kernel6.12-debuginfo-common-aarch64 1:6.12.94-123.180.amzn2023
Amazon Linux · 2023 kernel6.12-debuginfo-common-x86_64 1:6.12.94-123.180.amzn2023
Amazon Linux · 2023 kernel6.12-devel 1:6.12.94-123.180.amzn2023
Amazon Linux · 2023 kernel6.12-headers 1:6.12.94-123.180.amzn2023
Amazon Linux · 2023 kernel6.12-modules-extra 1:6.12.94-123.180.amzn2023
Amazon Linux · 2023 kernel6.12-modules-extra-common 1:6.12.94-123.180.amzn2023
Amazon Linux · 2023 kernel6.12-tools 1:6.12.94-123.180.amzn2023
Amazon Linux · 2023 kernel6.12-tools-debuginfo 1:6.12.94-123.180.amzn2023
Amazon Linux · 2023 kernel6.12-tools-devel 1:6.12.94-123.180.amzn2023
Amazon Linux · 2023 perf6.12 1:6.12.94-123.180.amzn2023
Amazon Linux · 2023 perf6.12-debuginfo 1:6.12.94-123.180.amzn2023
Amazon Linux · 2023 python3-perf6.12 1:6.12.94-123.180.amzn2023
Amazon Linux · 2023 python3-perf6.12-debuginfo 1:6.12.94-123.180.amzn2023

Vulnerabilities 1

  • Unscored —
    CVE-2026-53163

    locking/rtmutex: Skip remove_waiter() when waiter is not enqueued

    In the Linux kernel, the following vulnerability has been resolved: locking/rtmutex: Skip remove_waiter() when waiter is not enqueued syzbot triggered the following splat in remove_waiter() via FUTEX_CMP_REQUEUE_PI: KASAN: null-ptr-deref in range [0x000000000…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux

References

  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-53163.html