A reputed Gambino crime-family associate involved in a knife fight at Brooklyn pizza hot spot Lucali may be back in prison after a judge ruled yesterday that he violated probation by committing another stabbing.

Battista “Benny” Geritano faces up to two years in prison for violating his federal probation after he allegedly stabbed Nunzio Fusco as the two fought inside Nouveau, a Bay Ridge lounge, early on Dec. 23.

Geritano, 40, could face more jail time if convicted in state court of committing the assault, which began after the two bumped into each other, officials say.

After watching security video, federal Judge Sterling Johnson ruled that Geritano appeared to be holding a knife when he lunged toward Fusco in the club.

The judge is slated to sentence Geritano in April for violating his probation for a series of bank burglaries.

In 2011, Geritano was charged with slicing Lucali owner Mark Iacono in a sidewalk knife brawl. Charges were dropped after both refused to testify, officials said.