The SUSE Security Team has published an in-depth
article on its findings after reviewing a D-Bus service contained
in LightDM
Greeter by KDE (the lightdm-kde-greeter package)
for addition to openSUSE Tumbleweed. The team found a privilege
escalation from the lightdm service user to root, as
well as other attack vectors in the service:

In agreement with upstream, we assigned CVE-2025-62876 to track the
lightdm service user to root privilege escalation aspect described in
this report. The severity of the issue is low, since it only affects defense-in-depth (if the lightdm service user were compromised) and
the problematic logic can only be reached and exploited if triggered interactively by a privileged user.

The fixes are contained in the 6.0.4
release of the project.

https://lwn.net/Articles/1046376/
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