CVE-2014-5148: Xen

Medium severity, CVSS 4.6. EPSS: 0.4% chance of exploitation in the next 30 days.

Xen 4.4.x, when running on an ARM system and "handling an unknown system register access from 64-bit userspace," returns to an instruction of the trap handler for kernel space faults instead of an instruction that is associated with faults in 64-bit userspace, which allows local guest users to cause a denial of service (crash) and possibly gain privileges via a crafted process.

Affected products

• Xen Xen: version 4.4.1 only; version 4.4.0 only

Published 2014-10-26. Last modified 2026-06-17.