After failing two voluntary drug tests later that year, Englishman Benn, 26, had not fought since April 2022.
Benn won the 10-round fight by scores of 99-91, 99-91, and 96-94.
“I required the rounds. “I’ve been through hell and back,” Benn remarked after the fight.
“Because Britain is my home, it’s only right that I fight back sooner rather than later.”
Benn was fighting for the first time in 525 days, and he is currently undefeated in 22 fights.
In the run-up to his bout with Chris Eubank Jr last October, Benn failed two Voluntary Anti-Doping Association (Vada) tests, testing positive for the female reproductive medication clomifene.
He maintains that he is not doping on purpose.
UK Anti-Doping (Ukad) suspended him in March, but following a hearing, the National Anti-Doping Panel overturned his suspension in July.
Ukad and the British Boxing Board of Control (BBBofC) are appealing the ruling, and Benn presently does not have a boxing licence in the UK.
Benn and Eubank Jr were set to battle 30 years after their dads, Nigel Benn and Chris Eubank Sr, fought.