According to BBC Sport, his Serie A club confirmed on Friday that Mariga ruptured his anterior cruciate ligament in their 2-0 league win over Novara on Wednesday.
Parma has not indicated how long he will be out but the injury usually takes several months to recover effectively ruling him out for the rest of the season.
He is also very unlikely to feature for Kenya in their 2014 World Cup and 2013 Africa Cup of Nations qualifiers in June.
Kenya is due to travel to Togo for the second leg of their Nations Cup qualifier on the weekend of June 15-17 with a 2-1 lead from their first leg in February
Earlier there were doubts over his future involvement with Stars after he boycotted playing for the team on the eve of the Togo home clash over unpaid travel expenses he incurred on national duty.
Football Kenya Federation later sent him a letter asking him to send them his claims that he pegged at Sh1.2m.
Kenya are also due to play other Group F opponents Malawi, Nigeria and Namibia in World Cup qualifiers in June.