CVE-2017-10916: Xen

High severity, CVSS 7.5. EPSS: 1.3% chance of exploitation in the next 30 days.

The vCPU context-switch implementation in Xen through 4.8.x improperly interacts with the Memory Protection Extensions (MPX) and Protection Key (PKU) features, which makes it easier for guest OS users to defeat ASLR and other protection mechanisms, aka XSA-220.

Affected products

• Xen Xen: version 4.5.0 only; version 4.5.1 only; version 4.5.2 only; version 4.5.3 only; version 4.5.5 only; version 4.6.0 only; …

Published 2017-07-05. Last modified 2026-06-17.