CVE-2015-2150: Linux Kernel

Medium severity, CVSS 4.9. EPSS: 0.5% chance of exploitation in the next 30 days.

Xen 3.3.x through 4.5.x and the Linux kernel through 3.19.1 do not properly restrict access to PCI command registers, which might allow local guest OS users to cause a denial of service (non-maskable interrupt and host crash) by disabling the (1) memory or (2) I/O decoding for a PCI Express device and then accessing the device, which triggers an Unsupported Request (UR) response.

Affected products

• Linux Linux Kernel: up to and including 3.19.1
• Ubuntu Ubuntu: version 12.04 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 2015-03-12. Last modified 2026-06-17.