CVE-2012-4536: Xen

Low severity, CVSS 2.1. EPSS: 0.4% chance of exploitation in the next 30 days.

The (1) domain_pirq_to_emuirq and (2) physdev_unmap_pirq functions in Xen 2.2 allows local guest OS administrators to cause a denial of service (Xen crash) via a crafted pirq value that triggers an out-of-bounds read.

Affected products

• Xen Xen: version 2.2.0 only

Published 2012-11-21. Last modified 2026-06-16.