Uncontrolled Recursion Affecting qemu package, versions <11.0.1-r0


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.41% (33rd percentile)

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  • Snyk IDSNYK-WOLFILATEST-QEMU-17671698
  • published29 Jun 2026
  • disclosed9 Mar 2021

Introduced: 9 Mar 2021

CVE-2021-20255  (opens in a new tab)
CWE-674  (opens in a new tab)

How to fix?

Upgrade Wolfi qemu to version 11.0.1-r0 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 Wolfi. See How to fix? for Wolfi relevant fixed versions and status.

A stack overflow via an infinite recursion vulnerability was found in the eepro100 i8255x device emulator of QEMU. This issue occurs while processing controller commands due to a DMA reentry issue. This flaw allows a guest user or process to consume CPU cycles or crash the QEMU process on the host, resulting in a denial of service. The highest threat from this vulnerability is to system availability.

CVSS Base Scores

version 3.1