/usr/lib/dracut/modules.d/90dmsquash-live/ is in dracut-core 047-2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/dracut/modules.d/90dmsquash-live/apply-live-updates.sh
/usr/lib/dracut/modules.d/90dmsquash-live/checkisomd5@.service
/usr/lib/dracut/modules.d/90dmsquash-live/dmsquash-generator.sh
/usr/lib/dracut/modules.d/90dmsquash-live/dmsquash-live-genrules.sh
/usr/lib/dracut/modules.d/90dmsquash-live/dmsquash-live-root.sh
/usr/lib/dracut/modules.d/90dmsquash-live/dmsquash-liveiso-genrules.sh
/usr/lib/dracut/modules.d/90dmsquash-live/iso-scan.sh
/usr/lib/dracut/modules.d/90dmsquash-live/module-setup.sh
/usr/lib/dracut/modules.d/90dmsquash-live/parse-dmsquash-live.sh
/usr/lib/dracut/modules.d/90dmsquash-live/parse-iso-scan.sh