A use-after-free issue was addressed with improved memory management. This issue is fixed in iOS 17 and iPadOS 17, watchOS 10, macOS Sonoma 14. Processing web content may lead to arbitrary code execution.
https://support.apple.com/en-us/HT213940
https://support.apple.com/en-us/HT213938
https://support.apple.com/en-us/HT213937
https://security.gentoo.org/glsa/202401-33
http://www.openwall.com/lists/oss-security/2023/09/28/3
http://seclists.org/fulldisclosure/2023/Oct/9