Out-of-bounds Write Affecting qemu package, versions <1:4.2-3ubuntu6.17


Severity

Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.05% (16th percentile)

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  • Snyk IDSNYK-UBUNTU2004-QEMU-1290883
  • published12 May 2021
  • disclosed2 Jun 2021

Introduced: 12 May 2021

CVE-2021-3546  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Ubuntu:20.04 qemu to version 1:4.2-3ubuntu6.17 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 Ubuntu. See How to fix? for Ubuntu:20.04 relevant fixed versions and status.

An out-of-bounds write vulnerability was found in the virtio vhost-user GPU device (vhost-user-gpu) of QEMU in versions up to and including 6.0. The flaw occurs while processing the 'VIRTIO_GPU_CMD_GET_CAPSET' command from the guest. It could allow a privileged guest user to crash the QEMU process on the host, resulting in a denial of service condition, or potential code execution with the privileges of the QEMU process.

CVSS Scores

version 3.1