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Loop with Unreachable Exit Condition ('Infinite Loop') Affecting qemu package, versions <1:8.1.0+ds-1

0.0
medium

Snyk CVSS

    Attack Complexity Low
    Availability High

    Threat Intelligence

    EPSS 0.05% (18th percentile)
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NVD
5.5 medium
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SUSE
3.2 low
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Red Hat
3.2 low

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  • Snyk ID SNYK-DEBIANUNSTABLE-QEMU-1078278
  • published 22 Feb 2021
  • disclosed 9 Mar 2021
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Introduced: 22 Feb 2021

CVE-2021-20255 Open this link in a new tab
CWE-835 Open this link in a new tab

How to fix?

Upgrade Debian:unstable qemu to version 1:8.1.0+ds-1 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:unstable 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.