The issue was addressed with improved checks. This issue is fixed in iOS 18.2 and iPadOS 18.2, iPadOS 17.7.3, macOS Sequoia 15.2, macOS Sonoma 14.7.2, macOS Ventura 13.7.2, tvOS 18.2, visionOS 2.2, watchOS 11.2. Processing a maliciously crafted font may result in the disclosure of process memory.
https://support.apple.com/en-us/121845
https://support.apple.com/en-us/121844
https://support.apple.com/en-us/121843
https://support.apple.com/en-us/121842
https://support.apple.com/en-us/121840
https://support.apple.com/en-us/121839
https://support.apple.com/en-us/121838
https://support.apple.com/en-us/121837
http://seclists.org/fulldisclosure/2024/Dec/8
http://seclists.org/fulldisclosure/2024/Dec/7
http://seclists.org/fulldisclosure/2024/Dec/6