An issue was discovered in certain Apple products. iOS before 10.2 is affected. macOS before 10.12.2 is affected. watchOS before 3.1.3 is affected. The issue involves the "Kernel" component, which allows local users to cause a denial of service via unspecified vectors.
https://support.apple.com/HT207487
https://support.apple.com/HT207423
https://support.apple.com/HT207422