Multiple memory corruption issues were addressed with improved memory handling. This issue is fixed in macOS Sonoma 14.3, iOS 16.7.5 and iPadOS 16.7.5, iOS 17.3 and iPadOS 17.3. Processing maliciously crafted web content may lead to arbitrary code execution.
https://support.apple.com/kb/HT214063
https://support.apple.com/kb/HT214061
https://support.apple.com/kb/HT214059
https://support.apple.com/en-us/HT214063
https://support.apple.com/en-us/HT214061
https://support.apple.com/en-us/HT214059
http://seclists.org/fulldisclosure/2024/Jan/36