Forgive me. I didn't bring my green book. I don't have one handy, but a question of privilege has to be made in the chamber. You cannot rule on a question of privilege.
A member can raise a question at the earliest opportunity in the House, and it would be for the Speaker to find whether or not the item raised is in fact a prima facie breach of privilege. Then the appropriate motion, if the Speaker has so ruled, could be made. It is not for a committee to debate a question of privilege or for a committee chair to make a finding of a violation of privilege.