Cabinet secretary Arthur Sinodinos could be a key beneficiary of Premier Mike Baird's controversial overhaul of the Independent Commission Against Corruption when findings are published for an investigation in which he is embroiled.

Senator Sinodinos was a witness in Operation Credo, the investigation into Australian Water Holdings, a company he chaired that was linked to the family of corrupt former Labor powerbroker Eddie Obeid.

The senator is reportedly not subject to a corruption finding but may be subject to adverse opinion, including about a claimed lack of knowledge about political donations by the company to the NSW Liberals when he was both party honorary treasurer and chairman.

Changes that passed the NSW Parliament on Wednesday enshrine for the first time a right of response for subjects of an adverse finding or opinion.