Race Condition Affecting qemu-arm package, versions <4.2.1-11.13.1


Severity

Recommended
0.0
high
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.05% (20th percentile)

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  • Snyk IDSNYK-SLES152-QEMUARM-2689752
  • published14 Apr 2022
  • disclosed19 Feb 2021

Introduced: 19 Feb 2021

CVE-2021-20181  (opens in a new tab)
CWE-362  (opens in a new tab)

How to fix?

Upgrade SLES:15.2 qemu-arm to version 4.2.1-11.13.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream qemu-arm package and not the qemu-arm package as distributed by SLES. See How to fix? for SLES:15.2 relevant fixed versions and status.

A race condition flaw was found in the 9pfs server implementation of QEMU up to and including 5.2.0. This flaw allows a malicious 9p client to cause a use-after-free error, potentially escalating their privileges on the system. The highest threat from this vulnerability is to confidentiality, integrity as well as system availability.

CVSS Scores

version 3.1