Saturday was the first time Benzema had taken part in full training since Deschamps’s squad met up at their French headquarters of Clairefontaine last Monday.
Under FIFA rules, Deschamps can call up a replacement for an injured player until Monday, on the eve of their first game against Australia.
Doubts over Benzema’s fitness were a significant headache for Deschamps, already deprived of the services of midfielders Paul Pogba and N’Golo Kante, number two goalkeeper Mike Maignan, defender Presnel Kimpembe and forward Christopher Nkunku.
Benzema had not played an entire match since October 19.
He and Raphael Varane trained apart from the rest of the squad on Thursday during a session open to the media at the home stadium of Qatari champions Al Sadd.
Manchester United centre-back Varane has not played a game since coming off in tears against Chelsea on October 22.