CVE-2021-3682CWE-763

A flaw was found in the USB redirector device emulation of QEMU in versions prior to 6.1.0-rc2

published August 5, 2021

CVSS
—
EPSS
3%
Percentile
86.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.02880 · 86.7th percentile
Weakness
CWE-763 · Release of Invalid Pointer or Reference
Published
2021-08-05T19:51Z
EPSS history
Timeline
  • 05 AUG 19:51Z
    A flaw was found in the USB redirector device emulation of QEMU in versions prior to 6.1.0-rc2
    cvelistv5