New CPU vulnerability but this time it's Apple: GoFetch - 
Breaking Constant-Time Cryptographic Implementations Using Data Memory-Dependent Prefetchers

GoFetch is a microarchitectural side-channel attack that can extract secret keys from constant-time cryptographic implementations via data memory-dependent prefetchers (DMPs).

Website:
https://gofetch.fail/

Direct link to paper:
https://gofetch.fail/files/gofetch.pdf