VULNERABILITY INTELLIGENCE

CVE-2021-20255

CVSS score5.5 MEDIUM
EPSS probability0.41%
CISA KEVNot currently listed
Published2021-03-09
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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. 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.

Weakness classification

  • secalert@redhat.com: CWE-835
  • nvd@nist.gov: CWE-674

Primary references