Amazon Linux 2023 Security Advisory: ALAS2023-2026-1489
Advisory Released Date: 2026-03-25
Advisory Updated Date: 2026-03-25
Severity:
Medium
Issue Overview:
In the Linux kernel, the following vulnerability has been resolved:
mm/hugetlb: fix hugetlb_pmd_shared() (CVE-2026-23100)
In the Linux kernel, the following vulnerability has been resolved: bus: fsl-mc: fix use-after-free in driver_override_show() The driver_override_show() function reads the driver_override string without holding the device_lock. However, driver_override_store() uses driver_set_override(), which modifies and frees the string while holding the device_lock. This can result in a concurrent use-after-free if the string is freed by the store function while being read by the show function. Fix this by holding the device_lock around the read operation. (CVE-2026-23221)
Affected Packages:
kernel6.12
Issue Correction:
Run dnf update kernel6.12 --releasever 2023.10.20260316 or dnf update --advisory ALAS2023-2026-1489 --releasever 2023.10.20260316 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-libbpf-debuginfo-6.12.74-98.124.amzn2023.aarch64
bpftool6.12-6.12.74-98.124.amzn2023.aarch64
kernel-livepatch-6.12.74-98.124-1.0-0.amzn2023.aarch64
perf6.12-debuginfo-6.12.74-98.124.amzn2023.aarch64
kernel6.12-tools-6.12.74-98.124.amzn2023.aarch64
kernel6.12-tools-debuginfo-6.12.74-98.124.amzn2023.aarch64
bpftool6.12-debuginfo-6.12.74-98.124.amzn2023.aarch64
kernel6.12-libbpf-6.12.74-98.124.amzn2023.aarch64
python3-perf6.12-debuginfo-6.12.74-98.124.amzn2023.aarch64
perf6.12-6.12.74-98.124.amzn2023.aarch64
kernel6.12-libbpf-static-6.12.74-98.124.amzn2023.aarch64
kernel6.12-modules-extra-6.12.74-98.124.amzn2023.aarch64
kernel6.12-modules-extra-common-6.12.74-98.124.amzn2023.aarch64
kernel6.12-headers-6.12.74-98.124.amzn2023.aarch64
kernel6.12-6.12.74-98.124.amzn2023.aarch64
kernel6.12-tools-devel-6.12.74-98.124.amzn2023.aarch64
python3-perf6.12-6.12.74-98.124.amzn2023.aarch64
kernel6.12-libbpf-devel-6.12.74-98.124.amzn2023.aarch64
kernel6.12-debuginfo-6.12.74-98.124.amzn2023.aarch64
kernel6.12-debuginfo-common-aarch64-6.12.74-98.124.amzn2023.aarch64
kernel6.12-devel-6.12.74-98.124.amzn2023.aarch64
src:
kernel6.12-6.12.74-98.124.amzn2023.src
x86_64:
kernel6.12-tools-6.12.74-98.124.amzn2023.x86_64
kernel6.12-modules-extra-6.12.74-98.124.amzn2023.x86_64
kernel6.12-libbpf-devel-6.12.74-98.124.amzn2023.x86_64
kernel6.12-tools-debuginfo-6.12.74-98.124.amzn2023.x86_64
bpftool6.12-6.12.74-98.124.amzn2023.x86_64
kernel6.12-libbpf-static-6.12.74-98.124.amzn2023.x86_64
kernel6.12-libbpf-debuginfo-6.12.74-98.124.amzn2023.x86_64
perf6.12-debuginfo-6.12.74-98.124.amzn2023.x86_64
bpftool6.12-debuginfo-6.12.74-98.124.amzn2023.x86_64
kernel6.12-tools-devel-6.12.74-98.124.amzn2023.x86_64
python3-perf6.12-debuginfo-6.12.74-98.124.amzn2023.x86_64
python3-perf6.12-6.12.74-98.124.amzn2023.x86_64
perf6.12-6.12.74-98.124.amzn2023.x86_64
kernel6.12-modules-extra-common-6.12.74-98.124.amzn2023.x86_64
kernel6.12-libbpf-6.12.74-98.124.amzn2023.x86_64
kernel-livepatch-6.12.74-98.124-1.0-0.amzn2023.x86_64
kernel6.12-headers-6.12.74-98.124.amzn2023.x86_64
kernel6.12-6.12.74-98.124.amzn2023.x86_64
kernel6.12-debuginfo-6.12.74-98.124.amzn2023.x86_64
kernel6.12-debuginfo-common-x86_64-6.12.74-98.124.amzn2023.x86_64
kernel6.12-devel-6.12.74-98.124.amzn2023.x86_64