CVE-2021-3416

MediumCVSS 6.0/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 6.0/10CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H

Weakness enumeration

CWE-835

Affected software

No affected versions have been published.

Timeline

Published: Mar 18, 2021
Last modified: Jun 17, 2026
NVD status: Modified

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