Jamie Foxx Sued -- I Busted My Ass on Your Sidewalk ... NOW PAY

Jamie Foxx's sidewalk is a death trap in the making -- at least according to a woman who says she took a nasty spill on Jamie's pavement ... and it's all the actor's fault.

A woman named Catherine Jones filed the lawsuit against Jamie in L.A. County Superior Court -- claiming she attended a party at his house last year ... and fell head over heels on the sidewalk, seriously injuring herself.

Catherine says the sidewalk was negligently maintained by Foxx ... and that's the reason she busted her ass.

She's now suing for hospital expenses and other damages -- a sum totaling at least $10,000.