ALAS2KERNEL-5.4-2026-131

Amazon Linux 2 (EOS) Security Advisory: ALAS2KERNEL-5.4-2026-131
Advisory Released Date: 2026-10-01
Advisory Updated Date: 2026-10-01
Severity: Important
Issue Overview:

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

sctp: don't free the ASCONF's own transport in DEL-IP processing (CVE-2026-64564)

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

net/sched: serialize qdisc_rtab_list against concurrent get/put (CVE-2026-68138)

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

packet: use consistent hard_header_len in non-ring send paths (CVE-2026-74582)

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

sctp: clear control chunk transport if it is being removed (CVE-2026-74688)


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-5.4-2026-131 to update your system.
System reboot is required in order to complete this update.

New Packages:
aarch64:
    kernel-5.4.302-229.498.amzn2.aarch64
    kernel-headers-5.4.302-229.498.amzn2.aarch64
    kernel-debuginfo-common-aarch64-5.4.302-229.498.amzn2.aarch64
    perf-5.4.302-229.498.amzn2.aarch64
    perf-debuginfo-5.4.302-229.498.amzn2.aarch64
    python-perf-5.4.302-229.498.amzn2.aarch64
    python-perf-debuginfo-5.4.302-229.498.amzn2.aarch64
    kernel-tools-5.4.302-229.498.amzn2.aarch64
    kernel-tools-devel-5.4.302-229.498.amzn2.aarch64
    kernel-tools-debuginfo-5.4.302-229.498.amzn2.aarch64
    bpftool-5.4.302-229.498.amzn2.aarch64
    bpftool-debuginfo-5.4.302-229.498.amzn2.aarch64
    kernel-devel-5.4.302-229.498.amzn2.aarch64
    kernel-debuginfo-5.4.302-229.498.amzn2.aarch64

i686:
    kernel-headers-5.4.302-229.498.amzn2.i686

src:
    kernel-5.4.302-229.498.amzn2.src

x86_64:
    kernel-5.4.302-229.498.amzn2.x86_64
    kernel-headers-5.4.302-229.498.amzn2.x86_64
    kernel-debuginfo-common-x86_64-5.4.302-229.498.amzn2.x86_64
    perf-5.4.302-229.498.amzn2.x86_64
    perf-debuginfo-5.4.302-229.498.amzn2.x86_64
    python-perf-5.4.302-229.498.amzn2.x86_64
    python-perf-debuginfo-5.4.302-229.498.amzn2.x86_64
    kernel-tools-5.4.302-229.498.amzn2.x86_64
    kernel-tools-devel-5.4.302-229.498.amzn2.x86_64
    kernel-tools-debuginfo-5.4.302-229.498.amzn2.x86_64
    bpftool-5.4.302-229.498.amzn2.x86_64
    bpftool-debuginfo-5.4.302-229.498.amzn2.x86_64
    kernel-devel-5.4.302-229.498.amzn2.x86_64
    kernel-debuginfo-5.4.302-229.498.amzn2.x86_64

Additional References

Red Hat: CVE-2026-64564, CVE-2026-68138, CVE-2026-74582, CVE-2026-74688

Mitre: CVE-2026-64564, CVE-2026-68138, CVE-2026-74582, CVE-2026-74688