VULNERABILITY INTELLIGENCE

CVE-2021-20203

CVSS score3.2 LOW
EPSS probability0.59%
CISA KEVNot currently listed
Published2021-02-25
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:L

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.

Weakness classification

  • secalert@redhat.com: CWE-190
  • nvd@nist.gov: CWE-190

Primary references