An out-of-bounds write issue was addressed with improved input validation. This issue is fixed in iOS 16.2 and iPadOS 16.2, iOS 15.7.2 and iPadOS 15.7.2, tvOS 16.2, watchOS 9.2. Parsing a maliciously crafted video file may lead to kernel code execution.
https://support.apple.com/en-us/HT213535
https://support.apple.com/en-us/HT213531
https://support.apple.com/en-us/HT213536
https://support.apple.com/en-us/HT213530
http://seclists.org/fulldisclosure/2022/Dec/27
http://seclists.org/fulldisclosure/2022/Dec/26