Branch History Injection (BHI) is back! Disclosing Native BHI, bypassing deployed Spectre-v2/BHI mitigations (e.g., eBPF=off) to leak arbitrary kernel/host memory (e.g., root password hash below). Joint work by @SanWieb @HBitmasks @herbertbos @c_giuffrida: https://vusec.net/projects/native-bhi
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