CVE-2021-3546 Information

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.

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Reference

https://bugzilla.redhat.com/show_bug.cgi?id=1958978 http://www.openwall.com/lists/oss-security/2021/05/31/1 https://security.netapp.com/advisory/ntap-20210720-0008/ https://www.debian.org/security/2021/dsa-4980

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction Required

HIGH

Scope

NONE

Confidentiality Impact

CHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.2