Academic researchers developed ZenHammer, the first variant of the Rowhammer DRAM attack that works on CPUs based on recent AMD Zen microarchitecture that map physical addresses on DDR4 and DDR5 memory chips.

Academic researchers developed ZenHammer, the first variant of the Rowhammer DRAM attack that works on CPUs based on recent AMD Zen microarchitecture that map physical addresses on DDR4 and DDR5 memory chips.

  • Tobberone@lemm.eeEnglish
    2·
    9 months ago

    And unlike the rowhammer report which came a few years ago, neither AM4 nor AM5 is reported at 100% success rate, which asks the question why? What made those specific systems vulnerable?

    • Jesus_666@feddit.deEnglish
      1·
      9 months ago

      It might just come down to timing issues. They did mention that one reason DDR5 is so hard to attack is that the time window for flipping a bit is impractically short.