Amazon Linux 2 Security Advisory: ALAS2KERNEL-5.4-2026-121
Advisory Released Date: 2026-05-09
Advisory Updated Date: 2026-05-09
Severity:
Important
Issue Overview:
In the Linux kernel, the following vulnerability has been resolved:
xfrm: esp: avoid in-place decrypt on shared skb frags
"Dirty Frag" and other issues in Amazon Linux kernels:
https://aws.amazon.com/security/security-bulletins/2026-027-aws/ (CVE-2026-43284)
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-5.4-2026-121 to update your system.
System reboot is required in order to complete this update.
New Packages:
aarch64:
kernel-5.4.302-224.470.amzn2.aarch64
kernel-headers-5.4.302-224.470.amzn2.aarch64
kernel-debuginfo-common-aarch64-5.4.302-224.470.amzn2.aarch64
perf-5.4.302-224.470.amzn2.aarch64
perf-debuginfo-5.4.302-224.470.amzn2.aarch64
python-perf-5.4.302-224.470.amzn2.aarch64
python-perf-debuginfo-5.4.302-224.470.amzn2.aarch64
kernel-tools-5.4.302-224.470.amzn2.aarch64
kernel-tools-devel-5.4.302-224.470.amzn2.aarch64
kernel-tools-debuginfo-5.4.302-224.470.amzn2.aarch64
bpftool-5.4.302-224.470.amzn2.aarch64
bpftool-debuginfo-5.4.302-224.470.amzn2.aarch64
kernel-devel-5.4.302-224.470.amzn2.aarch64
kernel-debuginfo-5.4.302-224.470.amzn2.aarch64
i686:
kernel-headers-5.4.302-224.470.amzn2.i686
src:
kernel-5.4.302-224.470.amzn2.src
x86_64:
kernel-5.4.302-224.470.amzn2.x86_64
kernel-headers-5.4.302-224.470.amzn2.x86_64
kernel-debuginfo-common-x86_64-5.4.302-224.470.amzn2.x86_64
perf-5.4.302-224.470.amzn2.x86_64
perf-debuginfo-5.4.302-224.470.amzn2.x86_64
python-perf-5.4.302-224.470.amzn2.x86_64
python-perf-debuginfo-5.4.302-224.470.amzn2.x86_64
kernel-tools-5.4.302-224.470.amzn2.x86_64
kernel-tools-devel-5.4.302-224.470.amzn2.x86_64
kernel-tools-debuginfo-5.4.302-224.470.amzn2.x86_64
bpftool-5.4.302-224.470.amzn2.x86_64
bpftool-debuginfo-5.4.302-224.470.amzn2.x86_64
kernel-devel-5.4.302-224.470.amzn2.x86_64
kernel-debuginfo-5.4.302-224.470.amzn2.x86_64