Wind River Support Network


LIN1021-1058 : Security Advisory - qemu - CVE-2021-3682

Created: Aug 5, 2021    Updated: May 13, 2022
Resolved Date: Nov 23, 2021
Found In Version:
Fix Version:
Severity: Standard
Applicable for: Wind River Linux LTS 21
Component/s: Userspace


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.

CREATE(Triage):(User=admin) CVE-2021-3682 (


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