Buffer Overflow Affecting libvirt package, versions <0:8.0.0-5.2.module+el8.6.0+998+252a5635


Severity

Recommended
medium

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.09% (42nd percentile)

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  • Snyk IDSNYK-ROCKY8-LIBVIRT-3229905
  • published14 Jan 2023
  • disclosed29 Apr 2022

Introduced: 29 Apr 2022

CVE-2021-4207  (opens in a new tab)
CWE-120  (opens in a new tab)
CWE-362  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:8 libvirt to version 0:8.0.0-5.2.module+el8.6.0+998+252a5635 or higher.
This issue was patched in RLSA-2022:5821.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libvirt package and not the libvirt package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux:8 relevant fixed versions and status.

A flaw was found in the QXL display device emulation in QEMU. A double fetch of guest controlled values cursor-&gt;header.width and cursor-&gt;header.height can lead to the allocation of a small cursor object followed by a subsequent heap-based buffer overflow. A malicious privileged guest user could use this flaw to crash the QEMU process on the host or potentially execute arbitrary code within the context of the QEMU process.

CVSS Scores

version 3.1