Race Condition Affecting qemu-img package, versions <15:6.2.0-40.module+el8.9.0+20056+d9fb1ac3.1


Severity

Recommended
0.0
medium
0
10

Based on CentOS security rating

    Threat Intelligence

    EPSS
    0.04% (6th percentile)

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  • Snyk ID SNYK-CENTOS8-QEMUIMG-5816096
  • published 1 Aug 2023
  • disclosed 19 Jun 2023

How to fix?

Upgrade Centos:8 qemu-img to version 15:6.2.0-40.module+el8.9.0+20056+d9fb1ac3.1 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 QEMU. The async nature of hot-unplug enables a race scenario where the net device backend is cleared before the virtio-net pci frontend has been unplugged. A malicious guest could use this time window to trigger an assertion and cause a denial of service.

CVSS Scores

version 3.1
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NVD

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

5.6 medium
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SUSE

5.6 medium