CVE-2014-8866: Debian Linux

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

The compatibility mode hypercall argument translation in Xen 3.3.x through 4.4.x, when running on a 64-bit hypervisor, allows local 32-bit HVM guests to cause a denial of service (host crash) via vectors involving altering the high halves of registers while in 64-bit mode.

Affected products

• Debian Debian Linux: version 7.0 only
• Opensuse Opensuse: version 13.1 only; version 13.2 only
• Xen Xen: version 3.3.0 only; version 3.3.1 only; version 3.3.2 only; version 3.4.0 only; version 3.4.1 only; version 3.4.2 only; …

Published 2014-12-01. Last modified 2026-06-17.