Out-of-bounds Read Affecting qemu package, versions <1:7.2+dfsg-1



    Attack Complexity Low
    Scope Changed
    Availability High
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6.5 medium
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Red Hat
6.5 medium

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  • published 26 Nov 2022
  • disclosed 29 Nov 2022

How to fix?

Upgrade Debian:unstable qemu to version 1:7.2+dfsg-1 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:unstable. See How to fix? for Debian:unstable relevant fixed versions and status.

An out-of-bounds read flaw was found in the QXL display device emulation in QEMU. The qxl_phys2virt() function does not check the size of the structure pointed to by the guest physical address, potentially reading past the end of the bar space into adjacent pages. A malicious guest user could use this flaw to crash the QEMU process on the host causing a denial of service condition.