The issue was addressed with improved memory handling. This issue is fixed in iOS 16.2 and iPadOS 16.2, iOS 15.7.2 and iPadOS 15.7.2. Parsing a maliciously crafted video file may lead to unexpected system termination.
https://support.apple.com/en-us/HT213531
https://support.apple.com/en-us/HT213530