CVE-2014-8594: Debian Linux

Medium severity, CVSS 5.4. EPSS: 2.2% chance of exploitation in the next 30 days.

The do_mmu_update function in arch/x86/mm.c in Xen 4.x through 4.4.x does not properly restrict updates to only PV page tables, which allows remote PV guests to cause a denial of service (NULL pointer dereference) by leveraging hardware emulation services for HVM guests using Hardware Assisted Paging (HAP).

Affected products

• Debian Debian Linux: version 7.0 only
• Opensuse Opensuse: version 13.1 only; version 13.2 only
• Xen Xen: version 4.0.0 only; version 4.0.1 only; version 4.0.2 only; version 4.0.3 only; version 4.0.4 only; version 4.1.0 only; …

Published 2014-11-19. Last modified 2026-06-17.