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


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.06% (26th percentile)

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  • Snyk IDSNYK-DEBIAN13-QEMU-5693533
  • published10 Jul 2021
  • disclosed3 Mar 2022

Introduced: 10 Jul 2021

CVE-2021-3638  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Debian:13 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:13 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.

CVSS Scores

version 3.1