PT-2021-7314

CVE-2021-20255

Published

2021-03-09

Updated

2026-10-31

Description by

CVSS 3.1

5.5

Medium

MetricsAV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions QEMU (affected versions not specified)

Description 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. The 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.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Impacts

Researchers

Cornelius Aschermann

Sergej Schumilo

Simon Werner

Vendors

Affected products

Weakness enumeration

CWE-835: Loop with Unreachable Exit Condition (\'Infinite Loop\')

CWE-674: Uncontrolled Recursion

Related identifiers