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A comment on Blacksmith – Rowhammer bit flips on all DRAM devices today despite mitigations. Parent comment

Re:Blacksmith – Rowhammer bit flips on all DRAM devices toda... by buran77 on Monday November 15, 2021 @12:33PM (#29229988)
According to older paper [0] ECC can also be bypassed after reverse-engineering the mitigation in DDR3 DIMMs. Also:

> “DDR4 systems with ECC will likely be more exploitable, after reverse-engineering the ECC functions,” researchers Razavi and Jattke said

> What if I have ECC-capable DIMMs? Previous work [1] showed that due to the large number of bit flips in current DDR4 devices, ECC cannot provide complete protection against Rowhammer but makes exploitation harder.

[0] https://cs.vu.nl/~lcr220/ecc/ecc-rh-paper-eccploit-press-pre...

[1] https://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=8835222

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Re:Blacksmith – Rowhammer bit flips on all DRAM devices toda... by FpUser on Monday November 15, 2021 @03:49PM (#29232531)
While it can not protect from bit flips it can most likely warn about attack in progress due to a large number of bit flips.
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