A memory corruption issue was addressed with improved memory handling. This issue is fixed in watchOS 6.1.2, iOS 13.3.1 and iPadOS 13.3.1, tvOS 13.3.1. An application may be able to execute arbitrary code with kernel privileges.Referenceshttps://support.apple.com/en-us/HT210918https://support.apple.com/en-us/HT210920https://support.apple.com/en-us/HT210921
