Improper Locking Affecting libvirt package, versions <7.6.0-1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.28% (68th percentile)

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  • Snyk IDSNYK-DEBIAN12-LIBVIRT-1550960
  • published28 Jul 2021
  • disclosed2 Mar 2022

Introduced: 28 Jul 2021

CVE-2021-3667  (opens in a new tab)
CWE-667  (opens in a new tab)

How to fix?

Upgrade Debian:12 libvirt to version 7.6.0-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libvirt package and not the libvirt package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

An improper locking issue was found in the virStoragePoolLookupByTargetPath API of libvirt. It occurs in the storagePoolLookupByTargetPath function where a locked virStoragePoolObj object is not properly released on ACL permission failure. Clients connecting to the read-write socket with limited ACL permissions could use this flaw to acquire the lock and prevent other users from accessing storage pool/volume APIs, resulting in a denial of service condition. The highest threat from this vulnerability is to system availability.

CVSS Scores

version 3.1