CVE-2012-3496: Citrix Xenserver

Medium severity, CVSS 4.7. EPSS: 0.4% chance of exploitation in the next 30 days.

XENMEM_populate_physmap in Xen 4.0, 4.1, and 4.2, and Citrix XenServer 6.0.2 and earlier, when translating paging mode is not used, allows local PV OS guest kernels to cause a denial of service (BUG triggered and host crash) via invalid flags such as MEMF_populate_on_demand.

Affected products

• Citrix Xenserver: up to and including 6.0.2
• Xen Xen: version 4.0.0 only; version 4.1.0 only; version 4.2.0 only

Published 2012-11-23. Last modified 2026-06-16.