Vulnerability Database

296,147

Total vulnerabilities in the database

CVE-2021-3682

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.

  • Published: Aug 5, 2021
  • Updated: Apr 14, 2023
  • CVE: CVE-2021-3682
  • Severity: High
  • Exploit:

CVSS v3:

  • Severity: High
  • Score: 8.5
  • AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

CVSS v2:

  • Severity: Medium
  • Score: 6
  • AV:N/AC:M/Au:S/C:P/I:P/A:P

CWEs:

Software From Fixed in
qemu / qemu 6.1.0-rc1 6.1.0-rc1.x
qemu / qemu - 6.1.0
redhat / enterprise_linux 8.0 8.0.x
debian / debian_linux 9.0 9.0.x
debian / debian_linux 10.0 10.0.x
debian / debian_linux 11.0 11.0.x