Amazon Linux 2 Security Advisory: ALAS2-2026-3155
Advisory Released Date: 2026-02-05
Advisory Updated Date: 2026-02-05
Severity:
Medium
Issue Overview:
SSH servers parsing GSSAPI authentication requests do not validate the number of mechanisms specified in the request, allowing an attacker to cause unbounded memory consumption. (CVE-2025-58181)
Affected Packages:
nerdctl
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 nerdctl or yum update --advisory ALAS2-2026-3155 to update your system.
New Packages:
aarch64:
nerdctl-2.2.1-1.amzn2.0.1.aarch64
nerdctl-debuginfo-2.2.1-1.amzn2.0.1.aarch64
src:
nerdctl-2.2.1-1.amzn2.0.1.src
x86_64:
nerdctl-2.2.1-1.amzn2.0.1.x86_64
nerdctl-debuginfo-2.2.1-1.amzn2.0.1.x86_64