CVE-2021-3546 is an out-of-bounds write vulnerability in the virtio vhost-user GPU device of QEMU versions up to 6.0, affecting Debian and QEMU products. A privileged guest user can trigger this flaw by processing the 'VIRTIO_GPU_CMD_GET_CAPSET' command. This allows for a high-severity denial of service on the host, with potential for arbitrary code execution with QEMU process privileges. While the CVSS score is 8.2 (HIGH), there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 6.0.0CPE matchmatch criteria | cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:* | ||
11.0CPE matchmatch criteria | cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
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.
Jun 8, 2021QEMU: vhost-user-gpu: out-of-bounds write in virgl_cmd_get_capset()
May 4, 2021