Details were disclosed to a Los Angeles Superior Court judge during a closed session, their lawyers said Monday.
Leinart is a quarterback for the Arizona Cardinals.
"It's good through the end of the (football) season," said Leinart's attorney, Laura Wasser. "We've spoken to our client and he's pleased with it."
Ronald A. Rale, Cameron's lawyer, also confirmed the accord.
Cameron and her family sat on benches outside the courtroom as attorneys negotiated final custody arrangements before going before the judge.
Cameron was in the courtroom, but Leinart was not.