Race Condition Affecting qemu-img package, versions <15:6.2.0-11.module+el8.6.0+15668+464a1f31.2


Severity

Recommended
medium

Based on CentOS security rating

    Threat Intelligence

    EPSS
    0.09% (40th percentile)

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  • Snyk ID SNYK-CENTOS8-QEMUIMG-2439990
  • published 2 Apr 2022
  • disclosed 28 Mar 2022

How to fix?

Upgrade Centos:8 qemu-img to version 15:6.2.0-11.module+el8.6.0+15668+464a1f31.2 or higher.

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 Centos. See How to fix? for Centos:8 relevant fixed versions and status.

A flaw was found in the QXL display device emulation in QEMU. A double fetch of guest controlled values cursor-&gt;header.width and cursor-&gt;header.height can lead to the allocation of a small cursor object followed by a subsequent heap-based buffer overflow. A malicious privileged guest user could use this flaw to crash the QEMU process on the host or potentially execute arbitrary code within the context of the QEMU process.

CVSS Scores

version 3.1
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NVD

8.2 high
  • Attack Vector (AV)
    Local
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    High
  • User Interaction (UI)
    None
  • Scope (S)
    Changed
  • Confidentiality (C)
    High
  • Integrity (I)
    High
  • Availability (A)
    High
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Red Hat

7.5 high
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SUSE

7.5 high