Multiple memory corruption issues were addressed with improved state management. This issue is fixed in iOS 13.4 and iPadOS 13.4, macOS Catalina 10.15.4, tvOS 13.4, watchOS 6.2. A malicious application may be able to execute arbitrary code with kernel privileges.

MISC:https://support.apple.com/HT211100 | URL:https://support.apple.com/HT211100 | MISC:https://support.apple.com/HT211101 | URL:https://support.apple.com/HT211101 | MISC:https://support.apple.com/HT211102 | URL:https://support.apple.com/HT211102 | MISC:https://support.apple.com/HT211103 | URL:https://support.apple.com/HT211103