A validation issue was addressed with improved logic. This issue is fixed in iOS 18.4 and iPadOS 18.4, iPadOS 17.7.6, macOS Sequoia 15.4, macOS Sonoma 14.7.5, macOS Ventura 13.7.5, tvOS 18.4, visionOS 2.4, watchOS 11.4. A remote user may be able to cause a denial-of-service.
https://support.apple.com/en-us/122378
https://support.apple.com/en-us/122377
https://support.apple.com/en-us/122376
https://support.apple.com/en-us/122375
https://support.apple.com/en-us/122374
https://support.apple.com/en-us/122373
https://support.apple.com/en-us/122372
https://support.apple.com/en-us/122371
http://seclists.org/fulldisclosure/2025/Apr/9
http://seclists.org/fulldisclosure/2025/Apr/8
http://seclists.org/fulldisclosure/2025/Apr/5
http://seclists.org/fulldisclosure/2025/Apr/4
http://seclists.org/fulldisclosure/2025/Apr/13
http://seclists.org/fulldisclosure/2025/Apr/12