[xml/sgml-pkgs] Bug#1098322: libxml2: CVE-2025-27113: Null-deref in xmlPatMatch

[Salvatore Bonaccorso]

Source: libxml2
Version: 2.12.7+dfsg+really2.9.14-0.2
Severity: important
Tags: security upstream
Forwarded: https://gitlab.gnome.org/GNOME/libxml2/-/issues/861
X-Debbugs-Cc: carnil at debian.org, Debian Security Team <team at security.debian.org>
Control: found -1 2.9.14+dfsg-1.3

Hi,

The following vulnerability was published for libxml2.

CVE-2025-27113[0]:
| libxml2 before 2.12.10 and 2.13.x before 2.13.6 has a NULL pointer
| dereference in xmlPatMatch in pattern.c.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2025-27113
    https://www.cve.org/CVERecord?id=CVE-2025-27113
[1] https://gitlab.gnome.org/GNOME/libxml2/-/issues/861
[2] https://gitlab.gnome.org/GNOME/libxml2/-/commit/6c716d491dd2e67f08066f4dc0619efeb49e43e6
[3] https://gitlab.gnome.org/GNOME/libxml2/-/commit/503f788e84f1c1f1d769c2c7258d77faee94b5a3

Regards,
Salvatore