Improper Locking Affecting qemu-img package, versions <15:6.2.0-20.module+el8.7.0+16689+53d59bc2.1


Severity

Recommended
low

Based on CentOS security rating

    Threat Intelligence

    EPSS
    0.09% (40th percentile)

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  • Snyk ID SNYK-CENTOS8-QEMUIMG-3108661
  • published 26 Mar 2022
  • disclosed 17 Mar 2022

How to fix?

Upgrade Centos:8 qemu-img to version 15:6.2.0-20.module+el8.7.0+16689+53d59bc2.1 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 the libvirt nwfilter driver. The virNWFilterObjListNumOfNWFilters method failed to acquire the driver->nwfilters mutex before iterating over virNWFilterObj instances. There was no protection to stop another thread from concurrently modifying the driver->nwfilters object. This flaw allows a malicious, unprivileged user to exploit this issue via libvirt's API virConnectNumOfNWFilters to crash the network filter management daemon (libvirtd/virtnwfilterd).

CVSS Scores

version 3.1
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NVD

4.3 medium
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    Low
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    None
  • Integrity (I)
    None
  • Availability (A)
    Low
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Red Hat

5 medium
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SUSE

5.5 medium