Griffin tore the ACL in his left knee in the NFC title game in January. Cook, a rookie, had surgery to repair a torn meniscus in his right knee on Aug. 29.
Cook went all-out in practice Friday for the third straight day and says he feels great.
Griffin was limited in practice all week. He says he's getting more snaps with the defense in practice and feels like he's close to returning.
Backup defensive tackle Jimmy Kennedy is the only other Vikings player listed as questionable for the game. He has not played this year because of a knee injury.
The Associated Press contributed to this report.