ALAS2023-2025-1227

References: CVE-2025-38248  CVE-2025-39677  CVE-2025-39830 
FAQs regarding Amazon Linux ALAS/CVE Severity

Issue Overview:

In the Linux kernel, the following vulnerability has been resolved:

bridge: mcast: Fix use-after-free during router port configuration (CVE-2025-38248)

In the Linux kernel, the following vulnerability has been resolved:

net/sched: Fix backlog accounting in qdisc_dequeue_internal (CVE-2025-39677)

In the Linux kernel, the following vulnerability has been resolved:

net/mlx5: HWS, Fix memory leak in hws_pool_buddy_init error path (CVE-2025-39830)

Issue Correction:
Run dnf update kernel6.12 --releasever 2023.9.20251027 or dnf update --advisory ALAS2023-2025-1227 --releasever 2023.9.20251027 to update your system.
More information on how to update your system can be found on this page: Amazon Linux 2023 documentation

New Packages:

aarch64:
    kernel6.12-tools-debuginfo-6.12.48-67.114.amzn2023.aarch64
    kernel6.12-libbpf-devel-6.12.48-67.114.amzn2023.aarch64
    kernel6.12-libbpf-debuginfo-6.12.48-67.114.amzn2023.aarch64
    perf6.12-6.12.48-67.114.amzn2023.aarch64
    kernel6.12-tools-devel-6.12.48-67.114.amzn2023.aarch64
    kernel-livepatch-6.12.48-67.114-1.0-0.amzn2023.aarch64
    kernel6.12-modules-extra-common-6.12.48-67.114.amzn2023.aarch64
    kernel6.12-tools-6.12.48-67.114.amzn2023.aarch64
    kernel6.12-modules-extra-6.12.48-67.114.amzn2023.aarch64
    bpftool6.12-6.12.48-67.114.amzn2023.aarch64
    python3-perf6.12-6.12.48-67.114.amzn2023.aarch64
    kernel6.12-headers-6.12.48-67.114.amzn2023.aarch64
    kernel6.12-libbpf-6.12.48-67.114.amzn2023.aarch64
    python3-perf6.12-debuginfo-6.12.48-67.114.amzn2023.aarch64
    perf6.12-debuginfo-6.12.48-67.114.amzn2023.aarch64
    kernel6.12-6.12.48-67.114.amzn2023.aarch64
    kernel6.12-debuginfo-6.12.48-67.114.amzn2023.aarch64
    bpftool6.12-debuginfo-6.12.48-67.114.amzn2023.aarch64
    kernel6.12-libbpf-static-6.12.48-67.114.amzn2023.aarch64
    kernel6.12-debuginfo-common-aarch64-6.12.48-67.114.amzn2023.aarch64
    kernel6.12-devel-6.12.48-67.114.amzn2023.aarch64

src:
    kernel6.12-6.12.48-67.114.amzn2023.src

x86_64:
    python3-perf6.12-debuginfo-6.12.48-67.114.amzn2023.x86_64
    bpftool6.12-6.12.48-67.114.amzn2023.x86_64
    bpftool6.12-debuginfo-6.12.48-67.114.amzn2023.x86_64
    kernel6.12-libbpf-devel-6.12.48-67.114.amzn2023.x86_64
    kernel6.12-tools-debuginfo-6.12.48-67.114.amzn2023.x86_64
    perf6.12-debuginfo-6.12.48-67.114.amzn2023.x86_64
    perf6.12-6.12.48-67.114.amzn2023.x86_64
    python3-perf6.12-6.12.48-67.114.amzn2023.x86_64
    kernel6.12-modules-extra-6.12.48-67.114.amzn2023.x86_64
    kernel6.12-libbpf-debuginfo-6.12.48-67.114.amzn2023.x86_64
    kernel6.12-tools-6.12.48-67.114.amzn2023.x86_64
    kernel6.12-modules-extra-common-6.12.48-67.114.amzn2023.x86_64
    kernel6.12-libbpf-static-6.12.48-67.114.amzn2023.x86_64
    kernel-livepatch-6.12.48-67.114-1.0-0.amzn2023.x86_64
    kernel6.12-headers-6.12.48-67.114.amzn2023.x86_64
    kernel6.12-tools-devel-6.12.48-67.114.amzn2023.x86_64
    kernel6.12-libbpf-6.12.48-67.114.amzn2023.x86_64
    kernel6.12-6.12.48-67.114.amzn2023.x86_64
    kernel6.12-debuginfo-6.12.48-67.114.amzn2023.x86_64
    kernel6.12-debuginfo-common-x86_64-6.12.48-67.114.amzn2023.x86_64
    kernel6.12-devel-6.12.48-67.114.amzn2023.x86_64