UBUNTU-CVE-2021-3667

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Source
https://ubuntu.com/security/CVE-2021-3667
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-3667.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2021-3667
Upstream
Downstream
Related
Published
2022-03-02T23:15:00Z
Modified
2025-09-08T16:46:46Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - low
Summary
[none]
Details

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.

References

Affected packages

Ubuntu:20.04:LTS / libvirt

Package

Name
libvirt
Purl
pkg:deb/ubuntu/libvirt@6.0.0-0ubuntu8.16?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.0.0-0ubuntu8.16

Affected versions

5.*

5.4.0-0ubuntu5

6.*

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

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libnss-libvirt",
            "binary_version": "6.0.0-0ubuntu8.16"
        },
        {
            "binary_name": "libvirt-clients",
            "binary_version": "6.0.0-0ubuntu8.16"
        },
        {
            "binary_name": "libvirt-daemon",
            "binary_version": "6.0.0-0ubuntu8.16"
        },
        {
            "binary_name": "libvirt-daemon-driver-lxc",
            "binary_version": "6.0.0-0ubuntu8.16"
        },
        {
            "binary_name": "libvirt-daemon-driver-qemu",
            "binary_version": "6.0.0-0ubuntu8.16"
        },
        {
            "binary_name": "libvirt-daemon-driver-storage-gluster",
            "binary_version": "6.0.0-0ubuntu8.16"
        },
        {
            "binary_name": "libvirt-daemon-driver-storage-rbd",
            "binary_version": "6.0.0-0ubuntu8.16"
        },
        {
            "binary_name": "libvirt-daemon-driver-storage-zfs",
            "binary_version": "6.0.0-0ubuntu8.16"
        },
        {
            "binary_name": "libvirt-daemon-driver-vbox",
            "binary_version": "6.0.0-0ubuntu8.16"
        },
        {
            "binary_name": "libvirt-daemon-driver-xen",
            "binary_version": "6.0.0-0ubuntu8.16"
        },
        {
            "binary_name": "libvirt-daemon-system",
            "binary_version": "6.0.0-0ubuntu8.16"
        },
        {
            "binary_name": "libvirt-daemon-system-systemd",
            "binary_version": "6.0.0-0ubuntu8.16"
        },
        {
            "binary_name": "libvirt-daemon-system-sysv",
            "binary_version": "6.0.0-0ubuntu8.16"
        },
        {
            "binary_name": "libvirt-dev",
            "binary_version": "6.0.0-0ubuntu8.16"
        },
        {
            "binary_name": "libvirt-sanlock",
            "binary_version": "6.0.0-0ubuntu8.16"
        },
        {
            "binary_name": "libvirt-wireshark",
            "binary_version": "6.0.0-0ubuntu8.16"
        },
        {
            "binary_name": "libvirt0",
            "binary_version": "6.0.0-0ubuntu8.16"
        }
    ]
}

Ubuntu:22.04:LTS / libvirt

Package

Name
libvirt
Purl
pkg:deb/ubuntu/libvirt@7.6.0-0ubuntu3?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
7.6.0-0ubuntu3

Affected versions

7.*

7.6.0-0ubuntu1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libnss-libvirt",
            "binary_version": "7.6.0-0ubuntu3"
        },
        {
            "binary_name": "libvirt-clients",
            "binary_version": "7.6.0-0ubuntu3"
        },
        {
            "binary_name": "libvirt-daemon",
            "binary_version": "7.6.0-0ubuntu3"
        },
        {
            "binary_name": "libvirt-daemon-config-network",
            "binary_version": "7.6.0-0ubuntu3"
        },
        {
            "binary_name": "libvirt-daemon-config-nwfilter",
            "binary_version": "7.6.0-0ubuntu3"
        },
        {
            "binary_name": "libvirt-daemon-driver-lxc",
            "binary_version": "7.6.0-0ubuntu3"
        },
        {
            "binary_name": "libvirt-daemon-driver-qemu",
            "binary_version": "7.6.0-0ubuntu3"
        },
        {
            "binary_name": "libvirt-daemon-driver-storage-gluster",
            "binary_version": "7.6.0-0ubuntu3"
        },
        {
            "binary_name": "libvirt-daemon-driver-storage-iscsi-direct",
            "binary_version": "7.6.0-0ubuntu3"
        },
        {
            "binary_name": "libvirt-daemon-driver-storage-rbd",
            "binary_version": "7.6.0-0ubuntu3"
        },
        {
            "binary_name": "libvirt-daemon-driver-storage-zfs",
            "binary_version": "7.6.0-0ubuntu3"
        },
        {
            "binary_name": "libvirt-daemon-driver-vbox",
            "binary_version": "7.6.0-0ubuntu3"
        },
        {
            "binary_name": "libvirt-daemon-driver-xen",
            "binary_version": "7.6.0-0ubuntu3"
        },
        {
            "binary_name": "libvirt-daemon-system",
            "binary_version": "7.6.0-0ubuntu3"
        },
        {
            "binary_name": "libvirt-daemon-system-systemd",
            "binary_version": "7.6.0-0ubuntu3"
        },
        {
            "binary_name": "libvirt-daemon-system-sysv",
            "binary_version": "7.6.0-0ubuntu3"
        },
        {
            "binary_name": "libvirt-dev",
            "binary_version": "7.6.0-0ubuntu3"
        },
        {
            "binary_name": "libvirt-login-shell",
            "binary_version": "7.6.0-0ubuntu3"
        },
        {
            "binary_name": "libvirt-sanlock",
            "binary_version": "7.6.0-0ubuntu3"
        },
        {
            "binary_name": "libvirt-wireshark",
            "binary_version": "7.6.0-0ubuntu3"
        },
        {
            "binary_name": "libvirt0",
            "binary_version": "7.6.0-0ubuntu3"
        }
    ]
}