Amazon Linux 2023 Security Advisory: ALAS2023-2026-1446
Advisory Released Date: 2026-03-05
Advisory Updated Date: 2026-03-05
Severity:
Low
Issue Overview:
A flaw was identified in the interactive shell of the xmllint utility, part of the libxml2 project, where memory allocated for user input is not properly released under certain conditions. When a user submits input consisting only of whitespace, the program skips command execution but fails to free the allocated buffer. Repeating this action causes memory to continuously accumulate. Over time, this can exhaust system memory and terminate the xmllint process, creating a denial-of-service condition on the local system. (CVE-2026-1757)
Affected Packages:
libxml2
Issue Correction:
Run dnf update libxml2 --releasever 2023.10.20260302 or dnf update --advisory ALAS2023-2026-1446 --releasever 2023.10.20260302 to update your system.
More information on how to update your system can be found on this page: Amazon Linux 2023 documentation
New Packages:
aarch64:
libxml2-debugsource-2.10.4-1.amzn2023.0.18.aarch64
python3-libxml2-debuginfo-2.10.4-1.amzn2023.0.18.aarch64
libxml2-debuginfo-2.10.4-1.amzn2023.0.18.aarch64
libxml2-devel-2.10.4-1.amzn2023.0.18.aarch64
libxml2-static-2.10.4-1.amzn2023.0.18.aarch64
python3-libxml2-2.10.4-1.amzn2023.0.18.aarch64
libxml2-2.10.4-1.amzn2023.0.18.aarch64
src:
libxml2-2.10.4-1.amzn2023.0.18.src
x86_64:
libxml2-debugsource-2.10.4-1.amzn2023.0.18.x86_64
libxml2-static-2.10.4-1.amzn2023.0.18.x86_64
libxml2-debuginfo-2.10.4-1.amzn2023.0.18.x86_64
python3-libxml2-debuginfo-2.10.4-1.amzn2023.0.18.x86_64
libxml2-devel-2.10.4-1.amzn2023.0.18.x86_64
python3-libxml2-2.10.4-1.amzn2023.0.18.x86_64
libxml2-2.10.4-1.amzn2023.0.18.x86_64