Cyber Resilience

CVE-2021-3682

High

Published: 05 August 2021

Published
05 August 2021
Modified
21 November 2024
KEV Added
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Patch
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CVSS Score v3.1 8.5 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
EPSS Score 0.0048 65.4th percentile
Risk Priority 17 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-3682 is a high-severity Release of Invalid Pointer or Reference (CWE-763) vulnerability in Debian Debian Linux. Its CVSS base score is 8.5 (High).

Operationally, ranked in the top 34.6% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

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…

more

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.

CWE(s)
CWE-763

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

qemu
qemu
6.1.0 · ≤ 6.1.0
redhat
enterprise linux
8.0
debian
debian linux
10.0, 11.0, 9.0

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References