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Debian LTS: DLA-4089-1: libxslt Security Advisory Updates

debian lts
Calendar Grey March 24, 2025
Dist Debian Esm H88
Upgrade libxslt for Debian 11 to fix critical use-after-free security flaws in XSLT processing leading to potential exploits.
Two use-after-free vulnerabilities have been fixed in the XSLT processing library libxslt
Topics%20covered

Topics Covered

security advisory debian libxslt use-after-free CVE-2024-55549 XSLT

Summary

CVE-2024-55549

Use-after-free related to excluded namespaces

CVE-2025-24855

Use-after-free of XPath context node

For Debian 11 bullseye, these problems have been fixed in version
1.1.34-4+deb11u2.

We recommend that you upgrade your libxslt packages.

For the detailed security status of libxslt please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/source-package/libxslt

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS


Severity
critical
Lowest
Low
Medium
High
Critical

Package: libxslt
Version: 1.1.34-4+deb11u2
CVE ID: CVE-2024-55549 CVE-2025-24855
Debian Bug: 1100565 1100566

Topics%20covered

Topics Covered

security advisory debian libxslt use-after-free CVE-2024-55549 XSLT

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