CVE-2025-12748: Red Hat Enterprise Linux 10

Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days.

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.

Affected products

• Red Hat Red Hat Enterprise Linux 10: before 0:11.10.0-12.el10_2 (fixed in 0:11.10.0-12.el10_2)
• Red Hat Red Hat Enterprise Linux 6
• Red Hat Red Hat Enterprise Linux 7
• Red Hat Red Hat Enterprise Linux 8
• Red Hat Red Hat Enterprise Linux 9: before 0:11.10.0-12.el9_8 (fixed in 0:11.10.0-12.el9_8)

Published 2025-11-11. Last modified 2026-06-30.