AEPIC leak

By: Adrian (, August 9, 2022 11:21 am
Room: Moderated Discussions

"AEPIC Leak is the first architectural CPU bug that leaks stale data from the microarchitecture without using a side channel. It architecturally leaks stale data incorrectly returned by reading undefined APIC-register ranges."

This hardware bug works against SGX on Ice Lake/Ice Lake Server/Alder Lake cores, presumably also on Tiger Lake/Rocket Lake.

I wonder if this is the bug that has been corrected in the latest version of Sapphire Rapids.

PoC code:


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AEPIC leakAdrian2022/08/09 11:21 AM
  AEPIC leakMichael S2022/08/09 11:32 AM
    AEPIC leakrwessel2022/08/09 11:56 AM
      AEPIC leakhobold2022/08/09 12:20 PM
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