Amazon Linux 2 Security Advisory: ALAS2-2026-3145
Advisory Released Date: 2026-02-05
Advisory Updated Date: 2026-02-05
Severity:
Low
Issue Overview:
A flaw was identified in the RelaxNG parser of libxml2 related to how external schema inclusions are handled. The parser does not enforce a limit on inclusion depth when resolving nested <include> directives. Specially crafted or overly complex schemas can cause excessive recursion during parsing. This may lead to stack exhaustion and application crashes, creating a denial-of-service risk. (CVE-2026-0989)
Affected Packages:
libxml2
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 libxml2 or yum update --advisory ALAS2-2026-3145 to update your system.
New Packages:
aarch64:
libxml2-2.9.1-6.amzn2.5.23.aarch64
libxml2-devel-2.9.1-6.amzn2.5.23.aarch64
libxml2-static-2.9.1-6.amzn2.5.23.aarch64
libxml2-python-2.9.1-6.amzn2.5.23.aarch64
libxml2-debuginfo-2.9.1-6.amzn2.5.23.aarch64
i686:
libxml2-2.9.1-6.amzn2.5.23.i686
libxml2-devel-2.9.1-6.amzn2.5.23.i686
libxml2-static-2.9.1-6.amzn2.5.23.i686
libxml2-python-2.9.1-6.amzn2.5.23.i686
libxml2-debuginfo-2.9.1-6.amzn2.5.23.i686
src:
libxml2-2.9.1-6.amzn2.5.23.src
x86_64:
libxml2-2.9.1-6.amzn2.5.23.x86_64
libxml2-devel-2.9.1-6.amzn2.5.23.x86_64
libxml2-static-2.9.1-6.amzn2.5.23.x86_64
libxml2-python-2.9.1-6.amzn2.5.23.x86_64
libxml2-debuginfo-2.9.1-6.amzn2.5.23.x86_64