Apple has rolled out new updates for iPadOS and iOS, both aimed at addressing a long-standing security flaw and an issue with sending photos using an iCloud Link. iOS 15.2.1 should fix a bug that made some third-party CarPlay apps unresponsive, too.
https://www.notebookcheck.net/Apple-releases-iPadOS-15-2-1-and-iOS-15-2-1-to-address-a-long-standing-security-flaw-for-both-operating-systems.592531.0.html