| Name | CVE-2025-49794 |
| Description | A use-after-free vulnerability was found in libxml2. This issue occurs when parsing XPath elements under certain circumstances when the XML schematron has the <sch:name path="..."/> schema elements. This flaw allows a malicious actor to craft a malicious XML document used as input for libxml, resulting in the program's crash using libxml or other possible undefined behaviors. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1107755 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| libxml2 (PTS) | bullseye | 2.9.10+dfsg-6.7+deb11u4 | vulnerable |
| bullseye (security) | 2.9.10+dfsg-6.7+deb11u7 | vulnerable |
| bookworm | 2.9.14+dfsg-1.3~deb12u1 | vulnerable |
| bookworm (security) | 2.9.14+dfsg-1.3~deb12u2 | vulnerable |
| sid, trixie | 2.12.7+dfsg+really2.9.14-1 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| libxml2 | source | (unstable) | (unfixed) | | | 1107755 |
Notes
[bookworm] - libxml2 <postponed> (Minor issue; revisit when fixed upstream)
https://gitlab.gnome.org/GNOME/libxml2/-/issues/931
Fixed by: https://gitlab.gnome.org/GNOME/libxml2/-/commit/71e1e8af5ee46dad1b57bb96cfbf1c3ad21fbd7b