Amazon Linux 2 Security Advisory: ALAS2KERNEL-5.4-2026-124
Advisory Released Date: 2026-05-26
Advisory Updated Date: 2026-05-26
Severity:
Important
Issue Overview:
In the Linux kernel, the following vulnerability has been resolved:
netfilter: ipset: drop logically empty buckets in mtype_del (CVE-2026-31418)
PinTheft is a Linux local privilege escalation exploit for an RDS zerocopy double-free that can be turned into a page-cache overwrite through io_uring fixed buffers.
Affected Packages:
kernel
Note:
This advisory is applicable to Amazon Linux 2 - Kernel-5.4 Extra. Visit this page to learn more about Amazon Linux 2 (AL2) Extras and this FAQ section for the difference between AL2 Core and AL2 Extras advisories.
Issue Correction:
Run yum update kernel or yum update --advisory ALAS2KERNEL-5.4-2026-124 to update your system.
New Packages:
aarch64:
kernel-5.4.302-224.473.amzn2.aarch64
kernel-headers-5.4.302-224.473.amzn2.aarch64
kernel-debuginfo-common-aarch64-5.4.302-224.473.amzn2.aarch64
perf-5.4.302-224.473.amzn2.aarch64
perf-debuginfo-5.4.302-224.473.amzn2.aarch64
python-perf-5.4.302-224.473.amzn2.aarch64
python-perf-debuginfo-5.4.302-224.473.amzn2.aarch64
kernel-tools-5.4.302-224.473.amzn2.aarch64
kernel-tools-devel-5.4.302-224.473.amzn2.aarch64
kernel-tools-debuginfo-5.4.302-224.473.amzn2.aarch64
bpftool-5.4.302-224.473.amzn2.aarch64
bpftool-debuginfo-5.4.302-224.473.amzn2.aarch64
kernel-devel-5.4.302-224.473.amzn2.aarch64
kernel-debuginfo-5.4.302-224.473.amzn2.aarch64
i686:
kernel-headers-5.4.302-224.473.amzn2.i686
src:
kernel-5.4.302-224.473.amzn2.src
x86_64:
kernel-5.4.302-224.473.amzn2.x86_64
kernel-headers-5.4.302-224.473.amzn2.x86_64
kernel-debuginfo-common-x86_64-5.4.302-224.473.amzn2.x86_64
perf-5.4.302-224.473.amzn2.x86_64
perf-debuginfo-5.4.302-224.473.amzn2.x86_64
python-perf-5.4.302-224.473.amzn2.x86_64
python-perf-debuginfo-5.4.302-224.473.amzn2.x86_64
kernel-tools-5.4.302-224.473.amzn2.x86_64
kernel-tools-devel-5.4.302-224.473.amzn2.x86_64
kernel-tools-debuginfo-5.4.302-224.473.amzn2.x86_64
bpftool-5.4.302-224.473.amzn2.x86_64
bpftool-debuginfo-5.4.302-224.473.amzn2.x86_64
kernel-devel-5.4.302-224.473.amzn2.x86_64
kernel-debuginfo-5.4.302-224.473.amzn2.x86_64