The striker moved to the KC Stadium on a season-long loan deal from Sunderland during the summer, but could not confirm whether or not he will stay with the Tigers for a greater period of time.
"It's out of my hands. I think it's a season-long loan, but if there is an option then we will have to see what happens," Graham told The Sun. "I haven't spoken to the new manager or anyone at Sunderland. It was Paolo Di Canio who sent me out on loan.
"I'm concentrating on doing well for Hull. The manager has shown a lot of faith in me. He's been very good for me since the moment I walked into the club. He kept reminding me how good a player I am even though I hadn't scored for a while. That makes a difference.
"Goals give every striker confidence. It's a tough league and you might only get one chance so you have to take it. I hope that was the first of more to come. Hull worked hard to get in the Premier League and we don't want to give it up easily."
Graham scored his first goal in nearly a year during Hull's 1-1 draw against his former club Swansea City.