“This result proves that AMD systems are equally vulnerable to Rowhammer as Intel systems”
ETH Zurich flipped bits on 7 of 10 DDR4 modules on Zen 2 and 6 of 10 on Zen 3, despite the TRR mitigations shipped to stop exactly that. The sudo root exploit landed in an average of 209 seconds. Nobody had bothered testing AMD before because the early research focused on Intel. The researchers blame JEDEC bureaucracy for a decade of unfixed DRAM, and the RAM in your machine cannot be patched.