A flaw was found in the USB redirector device emulation of QEMU in versions prior to 6.1.0-rc2. It occurs when dropping packets during a bulk transfer from a SPICE client due to the packet queue being full. A malicious SPICE client could use this flaw to make QEMU call free() with faked heap chunk metadata, resulting in a crash of QEMU or potential code execution with the privileges of the QEMU process on the host.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published: 2021-08-05T19:51:26

Updated: 2024-08-03T17:01:07.707Z

Reserved: 2021-08-04T00:00:00

Link: CVE-2021-3682

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2021-08-05T20:15:09.963

Modified: 2024-11-21T06:22:09.070

Link: CVE-2021-3682

cve-icon Redhat

Severity : Moderate

Publid Date: 2021-07-19T00:00:00Z

Links: CVE-2021-3682 - Bugzilla