VDB
DEBIAN-CVE-2021-3682
DEBIAN-CVE-2021-3682
PUBLISHED
CVSS 8.5 HIGH
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.
Risk Scores
CVSS 3.1
8.5
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:12 | qemu | 0, 0, 0 |
| Debian:14 | qemu | 0, 0, 0 |
| Debian:11 | qemu | 5.2+dfsg, 0, 0 |
| Debian | qemu | |
| Debian:13 | qemu | 0, 0, 0 |
Timeline
- Aug 5, 2021 CVE Published
- Apr 28, 2026 CVE Updated