Access Restriction Bypass Affecting qemu package, versions <1:2.3+dfsg-3


0.0
medium

Snyk CVSS

    Attack Complexity Low
    Availability High

    Threat Intelligence

    EPSS 0.06% (27th percentile)
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NVD
6.2 medium

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  • Snyk ID SNYK-DEBIAN12-QEMU-1558221
  • published 1 Apr 2015
  • disclosed 1 Apr 2015

How to fix?

Upgrade Debian:12 qemu to version 1:2.3+dfsg-3 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream qemu package and not the qemu package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

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.