A use-after-free issue was addressed with improved memory management. This issue is fixed in iOS 17.1 and iPadOS 17.1, watchOS 10.1, iOS 16.7.2 and iPadOS 16.7.2, macOS Sonoma 14.1, Safari 17.1, tvOS 17.1. Processing web content may lead to arbitrary code execution.
https://support.apple.com/kb/HT213984
https://support.apple.com/en-us/HT213988
https://support.apple.com/en-us/HT213987
https://support.apple.com/en-us/HT213986
https://support.apple.com/en-us/HT213984
https://support.apple.com/en-us/HT213982
https://support.apple.com/en-us/HT213981
http://seclists.org/fulldisclosure/2023/Oct/27
http://seclists.org/fulldisclosure/2023/Oct/25
http://seclists.org/fulldisclosure/2023/Oct/24
http://seclists.org/fulldisclosure/2023/Oct/23