CVE-2021-3546
HIGH severity · CVSS 8.2 · Out-of-bounds write
8.2CVSS HIGH
Summary
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.
Impact & exploitability
Attack vectorLocal
Attack complexityLow
Privileges requiredHigh
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Additional information
- NVD record
- http://www.openwall.com/lists/oss-security/2021/05/31/1Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1958978Advisory
- https://security.gentoo.org/glsa/202208-27Advisory
- https://security.netapp.com/advisory/ntap-20210720-0008/Advisory
- https://www.debian.org/security/2021/dsa-4980Advisory