/usr/share/applications/ is in cinnamon 3.6.7-8ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/applications/cinnamon-killer-daemon.desktop
/usr/share/applications/cinnamon-menu-editor.desktop
/usr/share/applications/cinnamon-onscreen-keyboard.desktop
/usr/share/applications/cinnamon-settings-applets.desktop
/usr/share/applications/cinnamon-settings-backgrounds.desktop
/usr/share/applications/cinnamon-settings-calendar.desktop
/usr/share/applications/cinnamon-settings-default.desktop
/usr/share/applications/cinnamon-settings-desklets.desktop
/usr/share/applications/cinnamon-settings-desktop.desktop
/usr/share/applications/cinnamon-settings-effects.desktop
/usr/share/applications/cinnamon-settings-extensions.desktop
/usr/share/applications/cinnamon-settings-fonts.desktop
/usr/share/applications/cinnamon-settings-general.desktop
/usr/share/applications/cinnamon-settings-hotcorner.desktop
/usr/share/applications/cinnamon-settings-info.desktop
/usr/share/applications/cinnamon-settings-keyboard.desktop
/usr/share/applications/cinnamon-settings-mouse.desktop
/usr/share/applications/cinnamon-settings-notifications.desktop
/usr/share/applications/cinnamon-settings-panel.desktop
/usr/share/applications/cinnamon-settings-power.desktop
/usr/share/applications/cinnamon-settings-privacy.desktop
/usr/share/applications/cinnamon-settings-screensaver.desktop
/usr/share/applications/cinnamon-settings-sound.desktop
/usr/share/applications/cinnamon-settings-startup.desktop
/usr/share/applications/cinnamon-settings-themes.desktop
/usr/share/applications/cinnamon-settings-tiling.desktop
/usr/share/applications/cinnamon-settings-universal-access.desktop
/usr/share/applications/cinnamon-settings-user.desktop
/usr/share/applications/cinnamon-settings-users.desktop
/usr/share/applications/cinnamon-settings-windows.desktop
/usr/share/applications/cinnamon-settings-workspaces.desktop
/usr/share/applications/cinnamon-settings.desktop
/usr/share/applications/cinnamon.desktop
/usr/share/applications/cinnamon2d.desktop