CVE-2021-3546

HIGH

QEMU <= 6.0.0 - Out-of-bounds Write in vhost-user-gpu via VIRTIO_GPU_CMD_GET_CAPSET

Title source: llm
STIX 2.1

Description

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.

References (5)

Core 5
Core References
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2021/05/31/1
Issue Tracking, Third Party Advisory x_refsource_misc
https://bugzilla.redhat.com/show_bug.cgi?id=1958978
Third Party Advisory x_refsource_confirm
https://security.netapp.com/advisory/ntap-20210720-0008/
Third Party Advisory vendor-advisory x_refsource_debian
https://www.debian.org/security/2021/dsa-4980
Third Party Advisory vendor-advisory x_refsource_gentoo
https://security.gentoo.org/glsa/202208-27

Scores

CVSS v3 8.2
EPSS 0.0004
EPSS Percentile 13.5%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Details

CWE
CWE-787
Status published
Products (2)
debian/debian_linux 11.0
qemu/qemu < 6.0.0
Published Jun 02, 2021
Tracked Since Feb 18, 2026