CVE-2021-3667
Published: 2 March 2022
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.
Priority
Low
CVSS 3 base score: 6.5
Status
| Package | Release | Status |
|---|---|---|
|
libvirt Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(code not present)
|
| focal |
Released
(6.0.0-0ubuntu8.16)
|
|
| hirsute |
Ignored
(reached end-of-life)
|
|
| impish |
Not vulnerable
(7.6.0-0ubuntu1)
|
|
| jammy |
Released
(7.6.0-0ubuntu3)
|
|
| trusty |
Not vulnerable
(code not present)
|
|
| upstream |
Released
(7.6.0-1)
|
|
| xenial |
Not vulnerable
(code not present)
|
Notes
| Author | Note |
|---|---|
| mdeslaur | issue introduced in 4.1 |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3667
- https://ubuntu.com/security/notices/USN-5399-1
- NVD
- Launchpad
- Debian