From NFL Network:
#Packers LB Za’Darius Smith underwent back surgery this week, sources tell me and @RapSheet. He’s expected to be out an extended period of time, though the hope is it’s not a season-ending situation.
— Mike Garafolo (@MikeGarafolo) October 1, 2021
Smith has missed the Packers last two games after being placed on injured reserve in the wake of his 18 snap appearance against the Saints in Week 1.
The veteran outside linebacker missed almost all of training camp with a back issue, practicing only once and then only doing individual drills.