/usr/lib/libreoffice/share/ is in libreoffice-voikko 3.3-1ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/libreoffice/share/extensions/
/usr/lib/libreoffice/share/extensions/voikko/
/usr/lib/libreoffice/share/extensions/voikko/Linguistic.xcu
/usr/lib/libreoffice/share/extensions/voikko/META-INF/
/usr/lib/libreoffice/share/extensions/voikko/META-INF/manifest.xml
/usr/lib/libreoffice/share/extensions/voikko/SettingsDialog.xcu
/usr/lib/libreoffice/share/extensions/voikko/SettingsDialog.xdl
/usr/lib/libreoffice/share/extensions/voikko/SettingsDialog_en_US.default
/usr/lib/libreoffice/share/extensions/voikko/SettingsDialog_en_US.properties
/usr/lib/libreoffice/share/extensions/voikko/SettingsDialog_fi_FI.properties
/usr/lib/libreoffice/share/extensions/voikko/config.xcs
/usr/lib/libreoffice/share/extensions/voikko/config.xcu
/usr/lib/libreoffice/share/extensions/voikko/description.xml
/usr/lib/libreoffice/share/extensions/voikko/icon.png
/usr/lib/libreoffice/share/extensions/voikko/voikko.so