"New ZenHammer Memory Attack Impacts AMD Zen CPUs"

Researchers at ETH Zurich have developed "ZenHammer," the first variant of the Rowhammer Dynamic Random-Access Memory (DRAM) attack, which works on CPUs based on the recent AMD Zen microarchitecture that maps physical addresses on DDR4 and DDR5 memory chips. AMD Zen chips and DDR5 RAM modules were previously thought to be less vulnerable to Rowhammer, but new findings call this into question. Rowhammer is an attack method that exploits a physical feature of modern DRAM. The attack modifies data by repeatedly accessing specific rows of memory cells using read/write operations to change bit values. This article continues to discuss the new ZenHammer memory attack.

Bleeping Computer reports "New ZenHammer Memory Attack Impacts AMD Zen CPUs"

Submitted by grigby1