Description
Turning all screens off in Plasma-workspace and kscreenlocker while the lock screen is shown can result in the screen being unlocked when turning a screen on again.
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.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | plasma-workspace | 4:5.4.3-2 | — |
| Debian 13 | plasma-workspace | 4:5.4.3-2 | — |
| Debian 12 | plasma-workspace | 4:5.4.3-2 | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | kscreenlocker | 5.8.4-1.1 | openSUSE-SU-2024:10081-1 |
Advisories 1
- openSUSE-SU-2024:10081-1 kscreenlocker-5.8.4-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026