CVE-2013-4311: Canonical Ubuntu Linux

Medium severity, CVSS 4.6. EPSS: 0.4% chance of exploitation in the next 30 days.

libvirt 1.0.5.x before 1.0.5.6, 0.10.2.x before 0.10.2.8, and 0.9.12.x before 0.9.12.2 allows local users to bypass intended access restrictions by leveraging a PolkitUnixProcess PolkitSubject race condition in pkcheck via a (1) setuid process or (2) pkexec process, a related issue to CVE-2013-4288.

Affected products

• Canonical Ubuntu Linux: version 10.04 only; version 12.04 only; version 12.10 only; version 13.04 only
• Red Hat Enterprise Linux: version 6.0 only
• Red Hat Libvirt: version 0.9.12 only; version 0.10.2 only; version 0.10.2.1 only; version 0.10.2.2 only; version 0.10.2.3 only; version 0.10.2.4 only; …

Published 2013-10-03. Last modified 2026-06-16.