Smith is now is cleared to take part in Cowboys’ virtual offseason program.
Smith applied for reinstatement to the NFL earlier this offseason along with fellow Cowboys DE Randy Gregory.
Smith, 30, is a former first-round pick of the 49ers back in 2010. He was cut loose by the 49ers shortly after a DUI incident in 2015, even though San Francisco picked up his fifth-year option.
Smith later signed a one-year deal with the Raiders that was worth up to $8 million, which was largely incentive-based. Oakland elected to re-sign Smith to a two-year, $11.5 million contract in 2016.
However, the Raiders placed Smith on the reserve/suspended list before cutting him loose in 2018. The Cowboys later signed him to a one-year contract worth $2 million and includes another $2 million in incentives.
For his career, Smith recorded 180 tackles, 47.5 sacks, an interception, five forced fumbles, a recovery and eight pass defenses over the course of five seasons and 59 games.