Smith, who had moved back into the starting lineup for the Boston College game, injured his knee in the second quarter of that contest.
Rieskamp, who started two games in 2008, underwent surgery on Friday, October 16, for a sports hernia. He has not seen action in a game all season because of the injury.
Those two players bring the total of players lost for the season due to injury to nine for the Wolfpack. They join TE Mario Carter (knee), LB Ryan Cheek (hip), OL Denzelle Good (shoulder), LB Nate Irving (leg), FB Colby Jackson (knee), QB Everett Proctor (shoulder) and S Javon Walker (knee).