/usr/lib/ is in liferea 1.12.2-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/liferea/
/usr/lib/x86_64-linux-gnu/liferea/girepository-1.0/
/usr/lib/x86_64-linux-gnu/liferea/girepository-1.0/Liferea-3.0.typelib
/usr/lib/x86_64-linux-gnu/liferea/plugins/
/usr/lib/x86_64-linux-gnu/liferea/plugins/bold-unread.plugin
/usr/lib/x86_64-linux-gnu/liferea/plugins/bold-unread.py
/usr/lib/x86_64-linux-gnu/liferea/plugins/gnome-keyring.plugin
/usr/lib/x86_64-linux-gnu/liferea/plugins/gnome-keyring.py
/usr/lib/x86_64-linux-gnu/liferea/plugins/libnotify.plugin
/usr/lib/x86_64-linux-gnu/liferea/plugins/libnotify.py
/usr/lib/x86_64-linux-gnu/liferea/plugins/media-player.plugin
/usr/lib/x86_64-linux-gnu/liferea/plugins/media-player.py
/usr/lib/x86_64-linux-gnu/liferea/plugins/plugin-installer.plugin
/usr/lib/x86_64-linux-gnu/liferea/plugins/plugin-installer.py
/usr/lib/x86_64-linux-gnu/liferea/plugins/trayicon.plugin
/usr/lib/x86_64-linux-gnu/liferea/plugins/trayicon.py
/usr/lib/x86_64-linux-gnu/liferea/web-extension/
/usr/lib/x86_64-linux-gnu/liferea/web-extension/liblifereawebextension.so