What’s Vulnerable › Vulnerabilities

CVE-2021-3667

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-03-02 · updated 2026-06-17
• Weakness: CWE-667

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.

Affected products

• Debian Linux: 10.0
• NetApp ONTAP Select Deploy administration utility: all versions
• Red Hat Enterprise Linux: 8.0
• libvirt: from 4.1.0 through 7.5.0

References

• https://bugzilla.redhat.com/show_bug.cgi?id=1986094
• https://gitlab.com/libvirt/libvirt/-/commit/447f69dec47e1b0bd15ecd7cd49a9fd3b050fb87
• https://libvirt.org/git/?p=libvirt.git%3Ba=commit%3Bh=447f69dec47e1b0bd15ecd7cd49a9fd3b050fb87
• https://lists.debian.org/debian-lts-announce/2024/04/msg00000.html
• https://security.gentoo.org/glsa/202210-06
• https://security.netapp.com/advisory/ntap-20220331-0005/
• https://bugzilla.redhat.com/show_bug.cgi?id=1986094
• https://gitlab.com/libvirt/libvirt/-/commit/447f69dec47e1b0bd15ecd7cd49a9fd3b050fb87
• https://libvirt.org/git/?p=libvirt.git%3Ba=commit%3Bh=447f69dec47e1b0bd15ecd7cd49a9fd3b050fb87
• https://lists.debian.org/debian-lts-announce/2024/04/msg00000.html
• https://security.gentoo.org/glsa/202210-06
• https://security.netapp.com/advisory/ntap-20220331-0005/

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