The issue was addressed with improved memory handling. This issue is fixed in iOS 17.4 and iPadOS 17.4, macOS Sonoma 14.4, tvOS 17.4, visionOS 1.1, watchOS 10.4. Processing web content may lead to arbitrary code execution.
https://support.apple.com/kb/HT214088
https://support.apple.com/kb/HT214087
https://support.apple.com/kb/HT214084
https://support.apple.com/kb/HT214081
https://support.apple.com/en-us/HT214088
https://support.apple.com/en-us/HT214087
https://support.apple.com/en-us/HT214086
https://support.apple.com/en-us/HT214084
https://support.apple.com/en-us/HT214081
https://support.apple.com/en-us/120895
https://support.apple.com/en-us/120893
https://support.apple.com/en-us/120883
https://support.apple.com/en-us/120882
https://support.apple.com/en-us/120881
http://seclists.org/fulldisclosure/2024/Mar/26
http://seclists.org/fulldisclosure/2024/Mar/25