CVE-2021-4115
Published: 14 February 2022
There is a flaw in polkit which can allow an unprivileged user to cause polkit to crash, due to process file descriptor exhaustion. The highest threat from this vulnerability is to availability. NOTE: Polkit process outage duration is tied to the failing process being reaped and a new one being spawned
Priority
Medium
CVSS 3 base score: 5.5
Status
| Package | Release | Status |
|---|---|---|
|
policykit-1 Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(code not present)
|
| focal |
Released
(0.105-26ubuntu1.3)
|
|
| impish |
Released
(0.105-31ubuntu0.2)
|
|
| jammy |
Not vulnerable
(0.105-32)
|
|
| trusty |
Not vulnerable
(code not present)
|
|
| upstream |
Needs triage
|
|
| xenial |
Not vulnerable
(code not present)
|
Notes
| Author | Note |
|---|---|
| mdeslaur | Introduced by backported patch in focal+: PolkitSystemBusName-Retrieve-both-pid-and-uid.patch |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-4115
- https://securitylab.github.com/advisories/GHSL-2021-077-polkit/
- https://ubuntu.com/security/notices/USN-5304-1
- NVD
- Launchpad
- Debian