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CVE-2021-3667

CVE-2021-3667

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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 6.5 · Medium · EPSS 1.4% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • libvirt

    Versions
    • Fixedin - libvert v7.6.0-rc1 and above: Affected

    No fix published

  • libvirt Debian:12

    Affected ranges
    • ECOSYSTEM: < 7.6.0-1

    Update to 7.6.0-1

  • libvirt Debian:13

    Affected ranges
    • ECOSYSTEM: < 7.6.0-1

    Update to 7.6.0-1

  • libvirt Debian:14

    Affected ranges
    • ECOSYSTEM: < 7.6.0-1

    Update to 7.6.0-1

  • libvirt Ubuntu:20.04:LTS

    Versions
    • 5.4.0-0ubuntu5
    • 6.0.0-0ubuntu1
    • 6.0.0-0ubuntu2
    • 6.0.0-0ubuntu3
    • 6.0.0-0ubuntu4
    • 6.0.0-0ubuntu5
    • 6.0.0-0ubuntu6
    • 6.0.0-0ubuntu7
    • 6.0.0-0ubuntu8
    • 6.0.0-0ubuntu8.1
    • 6.0.0-0ubuntu8.2
    • 6.0.0-0ubuntu8.3
    • 6.0.0-0ubuntu8.4
    • 6.0.0-0ubuntu8.5
    • 6.0.0-0ubuntu8.7
    • 6.0.0-0ubuntu8.8
    • 6.0.0-0ubuntu8.9
    • 6.0.0-0ubuntu8.10
    • 6.0.0-0ubuntu8.11
    • 6.0.0-0ubuntu8.12
    • 6.0.0-0ubuntu8.13
    • 6.0.0-0ubuntu8.14
    • 6.0.0-0ubuntu8.15
    Affected ranges
    • ECOSYSTEM: < 6.0.0-0ubuntu8.16

    Update to 6.0.0-0ubuntu8.16

  • libvirt Ubuntu:22.04:LTS

    Versions
    • 7.6.0-0ubuntu1
    Affected ranges
    • ECOSYSTEM: < 7.6.0-0ubuntu3

    Update to 7.6.0-0ubuntu3

Original sources

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