Senate Intelligence Committee spokesmen did not respond to requests for comment on the report.
Senate Intelligence Committee Chairwoman Dianne Feinstein (D-Calif.) and Sens. Carl Levin (D-Mich.) and John McCain (R-Ariz.) wrote to Sony Pictures in December complaining that the movie implied torture helped to track down bin Laden.
They said this was false, citing a still-classified committee report on the Bush-era enhanced interrogation program.
The Intelligence panel then said it was starting the investigation into contact between filmmakers and CIA officials.
Director Kathryn Bigelow and screenwriter Mark Boal have defended the way the film depicts torture, saying those scenes were necessary because it is part of the history.