The issue was addressed with improved memory handling. This issue is fixed in Safari 17.2, macOS Sonoma 14.2, watchOS 10.2, iOS 17.2 and iPadOS 17.2, tvOS 17.2. Processing web content may lead to arbitrary code execution.
https://support.apple.com/kb/HT214039
https://support.apple.com/en-us/HT214041
https://support.apple.com/en-us/HT214040
https://support.apple.com/en-us/HT214039
https://support.apple.com/en-us/HT214036
https://support.apple.com/en-us/HT214035
https://security.gentoo.org/glsa/202401-33
http://www.openwall.com/lists/oss-security/2023/12/18/1
http://seclists.org/fulldisclosure/2023/Dec/9
http://seclists.org/fulldisclosure/2023/Dec/7
http://seclists.org/fulldisclosure/2023/Dec/6