Wind River Support Network


LIN1021-21 : Security Advisory - qemu - CVE-2021-3546

Created: May 17, 2021    Updated: Sep 25, 2021
Resolved Date: Aug 31, 2021
Found In Version:
Fix Version:
Severity: Standard
Applicable for: Wind River Linux LTS 21
Component/s: Userspace


An out-of-bounds write vulnerability was found in the virtio vhost-user GPU device (vhost-user-gpu) of QEMU. The flaw exists in virgl_cmd_get_capset() in contrib/vhost-user-gpu/virgl.c and could occur while processing the 'VIRTIO_GPU_CMD_GET_CAPSET' command. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service, or potentially execute arbitrary code on the host with the privileges of the QEMU process.

Patch series:

OOB write in virgl_cmd_get_capset() in virgl.c:

CREATE(Triage):(User=admin) CVE-2021-3546 (


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