Description
lightdm before 1.0.9 does not properly close file descriptors before opening a child process, which allows local users to write to the lightdm log or have other unspecified impact.
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 | lightdm | 1.0.9-1 | — |
| Debian 13 | lightdm | 1.0.9-1 | — |
| Debian 12 | lightdm | 1.0.9-1 | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | lightdm | 1.21.1-1.1 | openSUSE-SU-2024:10033-1 |
Advisories 1
- openSUSE-SU-2024:10033-1 liblightdm-gobject-1-0-1.21.1-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026