These articles from 2012 identify him as Sohale Siddiqi although does not make it so with fake news and all.
https://www.pbs.org/wgbh/pages/frontline/government-elections-politics/choice-2012/the-frontline-interview-sohale-siddiqi/
https://www.theguardian.com/world/2012/oct/03/barack-obama-wild-drugtaking-roommate