Loop with Unreachable Exit Condition ('Infinite Loop') Affecting qemu package, versions <1:5.2+dfsg-9


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.05% (21st percentile)

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  • Snyk IDSNYK-DEBIAN13-QEMU-5694050
  • published26 Feb 2021
  • disclosed18 Mar 2021

Introduced: 26 Feb 2021

CVE-2021-3416  (opens in a new tab)
CWE-835  (opens in a new tab)

How to fix?

Upgrade Debian:13 qemu to version 1:5.2+dfsg-9 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream qemu package and not the qemu package as distributed by Debian. See How to fix? for Debian:13 relevant fixed versions and status.

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.

CVSS Scores

version 3.1