A memory corruption issue was addressed with improved input validation. This issue affected versions prior to iOS 12.1.1, macOS Mojave 10.14.2, tvOS 12.1.1, watchOS 5.1.2.Referenceshttps://support.apple.com/kb/HT209343https://support.apple.com/kb/HT209342https://support.apple.com/kb/HT209340https://support.apple.com/kb/HT209341
