A logic issue was addressed with improved validation. This issue is fixed in tvOS 15.3, iOS 15.3 and iPadOS 15.3, watchOS 8.4, macOS Monterey 12.2. A malicious application may be able to gain root privileges.
https://support.apple.com/en-us/103177
https://support.apple.com/en-us/103175
https://support.apple.com/en-us/103172
https://support.apple.com/en-us/102848
https://support.apple.com/en-us/HT213059
https://support.apple.com/en-us/HT213057