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Out-of-bounds Write Affecting qemu package, versions <1:5.2+dfsg-3

0.0
medium

Snyk CVSS

    Attack Complexity Low
    Privileges Required High
    Scope Changed
    Availability High

    Threat Intelligence

    EPSS 0.04% (6th percentile)
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NVD
6 medium
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SUSE
5.7 medium
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Red Hat
5.7 medium

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  • Snyk ID SNYK-DEBIAN12-QEMU-1558311
  • published 4 Dec 2020
  • disclosed 8 Dec 2020
Report a new vulnerability Found a mistake?

Introduced: 4 Dec 2020

CVE-2020-27821 Open this link in a new tab
CWE-787 Open this link in a new tab
CWE-122 Open this link in a new tab

How to fix?

Upgrade Debian:12 qemu to version 1:5.2+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.

A flaw was found in the memory management API of QEMU during the initialization of a memory region cache. This issue could lead to an out-of-bounds write access to the MSI-X table while performing MMIO operations. A guest user may abuse this flaw to crash the QEMU process on the host, resulting in a denial of service. This flaw affects QEMU versions prior to 5.2.0.