Brock was signed on April 2 to a 1-calendar year deal. He started 7 of the 10 game titles he was active for.
He finished his time in Arizona with 37 tackles, two pass breakups, a person batted move and a person dropped interception.
Arizona also released Zach Zenner, who was inactive the past two games soon after signing with the Cardinals on Oct. 23. He experienced two catches for minus-3 yards and just one catch for 13 yards with the Cardinals.
The Cardinals are 3-8-1 and host the Pittsburgh Steelers on Sunday.