I think that's true. It looks like the only way CMU makes it is via a three-way tiebreaker between UMass, CMU, and Buffalo.
CMU win and Buffalo loss = Three way tie between UMass, CMU, and Buffalo with UMass getting #7 and CMU getting #8 while Buffalo would miss out.
Buffalo is in an interesting position as they can finish anywhere from 6th to 9th.