VULNERABILITY INTELLIGENCE

CVE-2021-3416

CVSS score6 MEDIUM
EPSS probability0.46%
CISA KEVNot currently listed
Published2021-03-18
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H

Description

A potential stack overflow via infinite loop issue was found in various NIC emulators of QEMU in versions up to and including 5.2.0. The issue occurs in loopback mode of a NIC wherein reentrant DMA checks get bypassed. A guest user/process may use this flaw to consume CPU cycles or crash the QEMU process on the host resulting in DoS scenario.

Weakness classification

  • secalert@redhat.com: CWE-835
  • nvd@nist.gov: CWE-835

Primary references