Lenoir (illness) is active for Sunday Night Football against the Cowboys, Lindsey Pallares of the 49ers' official site reports.
Lenoir had eight tackles (three solo) and a touchdown off of a returned blocked kick in Sunday's 24-23 loss to Arizona.
Lenoir logged 933 snaps on defense as a starter in 2023, finishing with 84 tackles (58 solo), 10 pass defenses and three interceptions across 17 games.
Lenoir (ribs) has been ruled out for the rest of Sunday's game against the Cardinals, Nick Wagoner of ESPN.com reports.
Lenoir recorded five tackles (four solo), one pass defensed and one interception during Sunday's 19-17 loss to Cleveland.
Lenoir recorded nine tackles (eight solo) and an interception in Sunday's 30-23 win at the Rams.
Lenoir totaled nine tackles (six solo) and a pass defense against the Commanders during Saturday's 37-20 victory.
Lenoir (illness) was activated from the reserve/COVID-19 list Monday.
The 49ers placed Lenoir (illness) on the reserve/COVID-19 list Wednesday.
Lenoir (personal) isn't listed on Wednesday's injury report.