Use After Free Affecting qemu package, versions <1:5.2+dfsg-4


0.0
high

Snyk CVSS

    Attack Complexity High
    Privileges Required High
    Scope Changed
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 0.05% (16th percentile)
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NVD
7.5 high
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SUSE
7.5 high
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Red Hat
7.5 high

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  • Snyk ID SNYK-DEBIANUNSTABLE-QEMU-1066314
  • published 2 Feb 2021
  • disclosed 13 May 2021

How to fix?

Upgrade Debian:unstable qemu to version 1:5.2+dfsg-4 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:unstable relevant fixed versions and status.

A race condition flaw was found in the 9pfs server implementation of QEMU up to and including 5.2.0. This flaw allows a malicious 9p client to cause a use-after-free error, potentially escalating their privileges on the system. The highest threat from this vulnerability is to confidentiality, integrity as well as system availability.