CVE-2013-0151: Xen

Medium severity, CVSS 4.6. EPSS: 0.6% chance of exploitation in the next 30 days.

The do_hvm_op function in xen/arch/x86/hvm/hvm.c in Xen 4.2.x on the x86_32 platform does not prevent HVM_PARAM_NESTEDHVM (aka nested virtualization) operations, which allows guest OS users to cause a denial of service (long-duration page mappings and host OS crash) by leveraging administrative access to an HVM guest in a domain with a large number of VCPUs.

Affected products

• Xen Xen: version 4.2.0 only; version 4.2.1 only

Published 2013-03-07. Last modified 2026-06-16.