UBUNTU-CVE-2021-3667

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

{
    "binaries": [
        {
            "binary_version": "6.0.0-0ubuntu8.16",
            "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"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-3667.json"

Ubuntu:22.04:LTS / libvirt