Security Advisory

CVE-2021-3682

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2021-08-05 19:51:26

Last updated 2024-08-03 17:01:07

Assigner redhat

State PUBLISHED

Description

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.

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