Google Finds DDR5 Flaw in New Rowhammer Attack

Google and researchers from ETH Zurich have uncovered a vulnerability in DDR5 memory modules that revives concerns over Rowhammer-style attacks. The team discovered the issue while testing memory chips manufactured by SK Hynix and paired with AMD processors. As Google finds DDR5 flaw naturally in this specific hardware configuration, the company plans to examine other vendors’ products to determine the scope of exposure.

The vulnerability appears to bypass existing Rowhammer mitigation techniques, raising security concerns for systems relying on DDR5. Although the flaw currently impacts a narrow range of hardware, researchers believe other platforms may also be susceptible. Google finds DDR5 flaw naturally within these initial tests, suggesting further analysis is necessary to understand the full risk.

Rowhammer exploits physical weaknesses in DRAM to flip bits and potentially execute unauthorized code. The discovery highlights the ongoing challenges memory manufacturers face in securing next-generation chips.

Read the full article here:
https://www.theregister.com/2025/09/17/ddr5_dram_rowhammer/