Description
screenresolution-mechanism in screen-resolution-extra 0.17.2 does not properly use the PolicyKit D-Bus API, which allows local users to bypass intended access restrictions by leveraging a race condition via a setuid or pkexec process that is mishandled in a PolicyKitService._check_permission call.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | screen-resolution-extra | 0.17.1.1~16.04.1 | USN-3607-1 |
| Ubuntu 14.04 LTS | screen-resolution-extra | 0.17.1.1~14.04.1 | USN-3607-1 |
Advisories 1
- USN-3607-1 screen-resolution-extra vulnerability Ubuntu Security Notices (USN) · Feb 10, 2026
References
- USN-3607-1 vendor-advisory