Amazon Linux 2 (EOS) Security Advisory: ALAS2-2026-3811
Advisory Released Date: 2026-07-20
Advisory Updated Date: 2026-07-20
Severity:
Important
Issue Overview:
Corosync through 3.1.9, if encryption is disabled or the attacker knows the encryption key, has a stack-based buffer overflow in orf_token_endian_convert in exec/totemsrp.c via a large UDP packet. (CVE-2025-30472)
Affected Packages:
corosync
Note:
This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.
Issue Correction:
Run yum update corosync or yum update --advisory ALAS2-2026-3811 to update your system.
New Packages:
aarch64:
corosync-2.4.3-6.amzn2.1.1.aarch64
corosync-debuginfo-2.4.3-6.amzn2.1.1.aarch64
corosynclib-2.4.3-6.amzn2.1.1.aarch64
corosynclib-devel-2.4.3-6.amzn2.1.1.aarch64
corosync-qdevice-2.4.3-6.amzn2.1.1.aarch64
corosync-qnetd-2.4.3-6.amzn2.1.1.aarch64
spausedd-2.4.3-6.amzn2.1.1.aarch64
i686:
corosync-2.4.3-6.amzn2.1.1.i686
corosync-debuginfo-2.4.3-6.amzn2.1.1.i686
corosynclib-2.4.3-6.amzn2.1.1.i686
corosynclib-devel-2.4.3-6.amzn2.1.1.i686
corosync-qdevice-2.4.3-6.amzn2.1.1.i686
corosync-qnetd-2.4.3-6.amzn2.1.1.i686
spausedd-2.4.3-6.amzn2.1.1.i686
src:
corosync-2.4.3-6.amzn2.1.1.src
x86_64:
corosync-2.4.3-6.amzn2.1.1.x86_64
corosync-debuginfo-2.4.3-6.amzn2.1.1.x86_64
corosynclib-2.4.3-6.amzn2.1.1.x86_64
corosynclib-devel-2.4.3-6.amzn2.1.1.x86_64
corosync-qdevice-2.4.3-6.amzn2.1.1.x86_64
corosync-qnetd-2.4.3-6.amzn2.1.1.x86_64
spausedd-2.4.3-6.amzn2.1.1.x86_64