There is a difference between making a false statement to congress and lying to congress.
The difference is intent. You can unknowingly make a false statement based on lack of information.
There is nothing in any article about this about attempt to cover up or lie. It seems like he been misinformed by his own subordinates
and after Brennan was briefed by the inspector general he went to congress and told them the truth.
"“Recognizing the importance of this matter and the need to resolve it in a way that preserved the crucial equities of both branches,
Director Brennan asked the CIA Office of Inspector General to examine the actions of CIA personnel,” Boyd said."