[Pkg-libvirt-maintainers] Bug#1120584: libvirt: CVE-2025-12748

[Salvatore Bonaccorso]

Source: libvirt
Version: 11.9.0-2
Severity: important
Tags: security upstream
Forwarded: https://gitlab.com/libvirt/libvirt/-/issues/825
X-Debbugs-Cc: carnil at debian.org, Debian Security Team <team at security.debian.org>

Hi,

The following vulnerability was published for libvirt.

CVE-2025-12748[0]:
| A flaw was discovered in libvirt in the XML file processing. More
| specifically, the parsing of user provided XML files was performed
| before the ACL checks. A malicious user with limited permissions
| could exploit this flaw by submitting a specially crafted XML file,
| causing libvirt to allocate too much memory on the host. The
| excessive memory consumption could lead to a libvirt process crash
| on the host, resulting in a denial-of-service condition.


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-2025-12748
    https://www.cve.org/CVERecord?id=CVE-2025-12748
[1] https://gitlab.com/libvirt/libvirt/-/issues/825

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore