CVE-2021-3682 | BDVDB-2026-158142 Detail
QEMU
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.
Impact#
No impact statement in the source data.
Weaknesses#
References#
- https://bugzilla.redhat.com/show_bug.cgi?id=1989651
- https://security.netapp.com/advisory/ntap-20210902-0006/
- https://lists.debian.org/debian-lts-announce/2021/09/msg00000.html
- https://www.debian.org/security/2021/dsa-4980
- https://security.gentoo.org/glsa/202208-27
- https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.