CVE-2014-1891: Xen

Medium severity, CVSS 5.2. EPSS: 0.5% chance of exploitation in the next 30 days.

Multiple integer overflows in the (1) FLASK_GETBOOL, (2) FLASK_SETBOOL, (3) FLASK_USER, and (4) FLASK_CONTEXT_TO_SID suboperations in the flask hypercall in Xen 4.3.x, 4.2.x, 4.1.x, 3.2.x, and earlier, when XSM is enabled, allow local users to cause a denial of service (processor fault) via unspecified vectors, a different vulnerability than CVE-2014-1892, CVE-2014-1893, and CVE-2014-1894.

Affected products

• Xen Xen: up to and including 4.3.0; version 3.2.0 only; version 3.2.1 only; version 3.2.2 only; version 3.2.3 only; version 3.3.0 only; …

Published 2014-04-01. Last modified 2026-06-17.