The Chiefs signed Harris to their active roster Tuesday, Matt Derrick of ChiefsDigest.com reports.
Las Vegas waived Harris (undisclosed) from injured reserve with an injury settlement Wednesday, per the NFL's transaction log.
The Raiders (undisclosed) waived Harris with an injury designation Saturday.
Harris logged 10 tackles (eight solo) and one sacks during Week 5's 30-29 win over the Raiders.
Harris recorded 13 tackles (seven solo) in the team's 20-17 loss to the Colts on Sunday.
Harris (illness) was reinstated to Kansas City's practice squad from the practice squad COVID-19 list, NFL reporter Aaron Wilson reports.
Harris (illness) was placed on the Chiefs' practice squad COVID-19 list Tuesday, per the NFL's official transaction log.
Harris isn't on Kansas City's injury report ahead of Sunday's matchup against the Browns.
Harris (hand) left Saturday's preseason game against the 49ers in the first half and never returned.
Harris was promoted to the 53-man roster from the practice squad by the Chiefs on Wednesday.