[xml/sgml-pkgs] Bug#1098320: libxml2: CVE-2024-56171: Use-after-free in xmlSchemaIDCFillNodeTables

[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/828
X-Debbugs-Cc: carnil at debian.org, Debian Security Team <team at security.debian.org>
Control: found -1 2.9.14+dfsg-1.3~deb12u1
Control: found -1 2.9.14+dfsg-1.3

Hi,

The following vulnerability was published for libxml2.

CVE-2024-56171[0]:
| libxml2 before 2.12.10 and 2.13.x before 2.13.6 has a use-after-free
| in xmlSchemaIDCFillNodeTables and xmlSchemaBubbleIDCNodeTables in
| xmlschemas.c. To exploit this, a crafted XML document must be
| validated against an XML schema with certain identity constraints,
| or a crafted XML schema must be used.


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-2024-56171
    https://www.cve.org/CVERecord?id=CVE-2024-56171
[1] https://gitlab.gnome.org/GNOME/libxml2/-/issues/828
[2] https://gitlab.gnome.org/GNOME/libxml2/-/commit/245b70d7d2768572ae1b05b3668ca858b9ec4ed4

Regards,
Salvatore