Description
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.
CVSS Metrics
- Vector
- AV:L/AC:L/Au:N/C:N/I:N/A:C
- Access Vector
- local
- Access Cmplx
- low
- Auth
- none
- Confidentiality
- none
- Integrity
- none
- Availability
- complete
- Weaknesses
- CWE-264
Metadata
- Primary Vendor
- UBUNTU
- Published
- 3/12/2015
- Last Modified
- 4/12/2025
- Source
- NIST NVD
- Note: Verify all details with official vendor sources before applying patches.
Affected Products
ubuntu : ubuntuxen : xenxen : xenxen : xenxen : xenxen : xenxen : xenxen : xenxen : xenxen : xenxen : xenxen : xenxen : xenxen : xenxen : xenxen : xenxen : xenxen : xenxen : xenxen : xenxen : xenxen : xenxen : xenxen : xenxen : xenxen : xenxen : xenxen : xenxen : xenxen : xenxen : xenlinux : linux_kernel
AI-Powered Remediation
Generate remediation guidance or a C-suite brief for this vulnerability.