DEBIAN-CVE-2021-20203

Advisory lineage Upstream: 1 Downstream: 2
Upstream
CVE-2021-20203
Published: 25 Feb 2021, 20:15
Last modified:28 Apr 2026, 20:21

Vulnerability Summary

Overall Risk (default)
low
13/100
CVSS Score
3.2 LOW
3.1 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

25 Feb 2021, 20:15
Published
Vulnerability first disclosed
28 Apr 2026, 20:21
Last Modified
Vulnerability information updated

Description

An integer overflow issue was found in the vmxnet3 NIC emulator of the QEMU for versions up to v5.2.0. It may occur if a guest was to supply invalid values for rx/tx queue size or other NIC parameters. A privileged guest user may use this flaw to crash the QEMU process on the host resulting in DoS scenario.

CVSS Metrics

  • v3.1•LOW•Score: 3.2CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:L

Affected Systems

  • debian•qemu

    < 1:5.2+dfsg-11+deb11u3 | < 1:6.2+dfsg-1 | < 1:6.2+dfsg-1 | < 1:6.2+dfsg-1

References (1)