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PMUSpill: The Counters in Performance Monitor Unit that Leak SGX-Protected Secrets. (arXiv:2207.11689v1 [cs.CR])
July 26, 2022, 1:20 a.m. | Pengfei Qiu, Yongqiang Lyu, Haixia Wang, Dongsheng Wang, Chang Liu, Qiang Gao, Chunlu Wang, Rihui Sun, Gang Qu
cs.CR updates on arXiv.org arxiv.org
Performance Monitor Unit (PMU) is a significant hardware module on the
current processors, which counts the events launched by processor into a set of
PMU counters. Ideally, the events triggered by instructions that are executed
but the results are not successfully committed (transient execution) should not
be recorded. However, in this study, we discover that some PMU events triggered
by the transient execution instructions will actually be recorded by PMU. Based
on this, we propose the PMUSpill attack, which enables …
More from arxiv.org / cs.CR updates on arXiv.org
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