Uncontrolled Recursion Affecting qemu-chardev-spice package, versions <5.2.0-103.2


Severity

Recommended
0.0
low
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.25% (48th percentile)

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  • Snyk IDSNYK-SLES153-QEMUCHARDEVSPICE-2666453
  • published14 Apr 2022
  • disclosed27 Aug 2021

Introduced: 27 Aug 2021

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

How to fix?

Upgrade SLES:15.3 qemu-chardev-spice to version 5.2.0-103.2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream qemu-chardev-spice package and not the qemu-chardev-spice package as distributed by SLES. See How to fix? for SLES:15.3 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