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A comment on Scientists find security risk in RISC-V open-source chip architecture. Parent comment

Re:Scientists find security risk in RISC-V open-source chip ... by Taniwha on Thursday June 06, 2024 @03:37AM (#40594606)
Yeah looks like bugs in riscv-boom rather than the RISC-V ISA itself
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Re:Scientists find security risk in RISC-V open-source chip ... by Taniwha on Thursday June 06, 2024 @03:43AM (#40594657)
In particular this is a timing attack like Spectre/Meltdown - looks like there are timing issues with allocation of write port slots when writing to the register file - because division takes so long it's possible to use a late write from division to tell whether a particular speculative branch has been taken or not
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