Race Condition Affecting qemu-img package, versions <15:4.2.1-5.el7


Severity

Recommended
0.0
high
0
10

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.4% (74th percentile)

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  • Snyk IDSNYK-ORACLE7-QEMUIMG-2596638
  • published10 Apr 2022
  • disclosed13 May 2021

Introduced: 13 May 2021

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

How to fix?

Upgrade Oracle:7 qemu-img to version 15:4.2.1-5.el7 or higher.
This issue was patched in ELSA-2021-9104.

NVD Description

Note: Versions mentioned in the description apply only to the upstream qemu-img package and not the qemu-img package as distributed by Oracle. See How to fix? for Oracle:7 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