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Out-of-bounds Write Affecting qemu package, versions <1:6.1+dfsg-6

0.0
medium

Snyk CVSS

    Attack Complexity Low
    Scope Changed
    Availability High

    Threat Intelligence

    EPSS 0.06% (23rd percentile)
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NVD
6.5 medium
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SUSE
3.2 low
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Red Hat
6 medium

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  • Snyk ID SNYK-DEBIAN12-QEMU-1558354
  • published 10 Jul 2021
  • disclosed 3 Mar 2022
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Introduced: 10 Jul 2021

CVE-2021-3638 Open this link in a new tab
CWE-787 Open this link in a new tab

How to fix?

Upgrade Debian:12 qemu to version 1:6.1+dfsg-6 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.

An out-of-bounds memory access flaw was found in the ATI VGA device emulation of QEMU. This flaw occurs in the ati_2d_blt() routine while handling MMIO write operations when the guest provides invalid values for the destination display parameters. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service.

References