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Access Restriction Bypass The advisory has been revoked - it doesn't affect any version of package qemu-kvm  (opens in a new tab)

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EPSS
0.45% (36th percentile)

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  • Snyk IDSNYK-UBUNTU1204-QEMUKVM-626998
  • published1 Apr 2015
  • disclosed1 Apr 2015
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Introduced: 1 Apr 2015

CVE-2015-2756  (opens in a new tab)
CWE-264  (opens in a new tab)

Amendment

The Ubuntu security team deemed this advisory irrelevant for Ubuntu:12.04.

NVD Description

Note: Versions mentioned in the description apply only to the upstream qemu-kvm package and not the qemu-kvm package as distributed by Ubuntu.

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.

References