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Hardware Vulnerability in Apple’s M-Series Chips
Schneier on Security www.schneier.com
It’s yet another hardware side-channel attack:
The threat resides in the chips’ data memory-dependent prefetcher, a hardware optimization that predicts the memory addresses of data that running code is likely to access in the near future. By loading the contents into the CPU cache before it’s actually needed, the DMP, as the feature is abbreviated, reduces latency between the main memory and the CPU, a common bottleneck in modern computing. DMPs are a relatively new phenomenon found only in M-series …
access addresses apple attack cache channel chips code cpu data dmp encryption feature future hardware hardware vulnerability memory near optimization prefetcher running series side-channel side-channel attack side-channel attacks threat vulnerability