CVE-2021-3416

medium

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.

References

https://bugzilla.redhat.com/show_bug.cgi?id=1932827

https://www.openwall.com/lists/oss-security/2021/02/26/1

https://lists.debian.org/debian-lts-announce/2021/04/msg00009.html

https://security.netapp.com/advisory/ntap-20210507-0002/

Details

Source: MITRE

Published: 2021-03-18

Updated: 2022-01-04

Type: CWE-835

Risk Information

CVSS v2

Base Score: 2.1

Vector: AV:L/AC:L/Au:N/C:N/I:N/A:P

Impact Score: 2.9

Exploitability Score: 3.9

Severity: LOW

CVSS v3

Base Score: 6

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

Impact Score: 4

Exploitability Score: 1.5

Severity: MEDIUM