UBUNTU-CVE-2015-2756

Advisory lineage Upstream: 1 Downstream: 1
Upstream
CVE-2015-2756
Downstream
USN-2608-1
Published: 01 Apr 2015, 00:00
Last modified:22 Apr 2026, 10:03

Vulnerability Summary

Overall Risk (default)
minimal
0/100
CVSS Score
No data
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

01 Apr 2015, 00:00
Published
Vulnerability first disclosed
22 Apr 2026, 10:03
Last Modified
Vulnerability information updated

Description

QEMU, as used in Xen 3.3.x through 4.5.x, does not properly restrict access to PCI command registers, which might allow local HVM guest 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 Systems

  • ubuntu•qemu

    < 2.0.0+dfsg-2ubuntu1.11

  • ubuntu•xen

    < 4.4.1-0ubuntu0.14.04.5

References (4)