CVE-2014-1642: Xen

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

The IRQ setup in Xen 4.2.x and 4.3.x, when using device passthrough and configured to support a large number of CPUs, frees certain memory that may still be intended for use, which allows local guest administrators to cause a denial of service (memory corruption and hypervisor crash) and possibly execute arbitrary code via vectors related to an out-of-memory error that triggers a (1) use-after-free or (2) double free.

Affected products

• Xen Xen: version 4.2.0 only; version 4.2.1 only; version 4.2.2 only; version 4.2.3 only; version 4.3.0 only; version 4.3.1 only

Published 2014-01-26. Last modified 2026-06-17.