The meeting, which took place at the VEB Arena, ended with a score of 1: 0 in favor of the guests.
The victory for Lokomotiv was brought by Fyodor Smolov's goal, who scored in the 45th minute with Anton Miranchuk's pass.
CSKA played with ten men from the 59th minute, when Kristiyan Bistrovic received a second yellow card and was sent off.
Following the results of nine rounds, Lokomotiv with 15 points takes the seventh place in the RPL standings.
CSKA with 16 points - fourth.
Earlier it was reported that Akhmat defeated Ural in the RPL match.