The root-run package hook changed ownership of paths below a
user-controlled home directory. A config symlink could redirect chown to
an arbitrary root-owned file during installation or upgrade.
Run the config writer as the target desktop user and remove the privileged
ownership changes. This also prevents the missing-config path from writing
through a user-controlled pathname as root. Add regression coverage and
bump the package release.
Reported-by: piratemoo (Esther) <22439214+piratemoo@users.noreply.github.com>
Link: https://github.com/piratemoo/Arbitrary-File-Ownership-Change-via-Symlink-LPE
Basti