CVE-2013-1920: Xen

Medium severity, CVSS 4.4. EPSS: 0.4% chance of exploitation in the next 30 days.

Xen 4.2.x, 4.1.x, and earlier, when the hypervisor is running "under memory pressure" and the Xen Security Module (XSM) is enabled, uses the wrong ordering of operations when extending the per-domain event channel tracking table, which causes a use-after-free and allows local guest kernels to inject arbitrary events and gain privileges via unspecified vectors.

Affected products

• Xen Xen: version 3.0.2 only; version 3.0.3 only; version 3.0.4 only; version 3.1.3 only; version 3.1.4 only; version 3.2.0 only; …

Published 2013-04-12. Last modified 2026-06-16.