VULNERABILITY INTELLIGENCE

CVE-2021-3667

CVSS score6.5 MEDIUM
EPSS probability1.37%
CISA KEVNot currently listed
Published2022-03-02
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Description

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.

Weakness classification

  • secalert@redhat.com: CWE-667
  • nvd@nist.gov: CWE-667

Primary references