CVE-2013-4356: Xen

Medium severity, CVSS 5.4. EPSS: 0.6% chance of exploitation in the next 30 days.

Xen 4.3.x writes hypervisor mappings to certain shadow pagetables when live migration is performed on hosts with more than 5TB of RAM, which allows local 64-bit PV guests to read or write to invalid memory and cause a denial of service (crash).

Affected products

• Xen Xen: version 4.3.0 only

Published 2013-10-09. Last modified 2026-06-16.