NVIDIA has released this security notice in response to customer inquiries about potential impacts to NVIDIA GPUs from Rowhammer attacks. Go to NVIDIA Product Security. Details NVIDIA has received new research related to the industry-wide DRAM issue known as “Rowhammer”. The research demonstrates a potential Rowhammer attack against an NVIDIA A6000 GPU with GDDR6 Memory. The purpose of this notice is to reinforce already known mitigations to Rowhammer attacks. Background Modern DRAMs, including the ones used by NVIDIA, are potentially susceptible to Rowhammer. The now decade-old Rowhammer problem has been well known for CPU memories (e.g., DDR, LPDDR). Recently, researchers at the University of Toronto demonstrated a successful Rowhammer exploitation on a NVIDIA A6000 GPU with GDDR6 memory where System-Level ECC was not enabled. In the same paper, the researchers showed that enabling System-Level ECC mitigates the Rowhammer problem. Mitigation NVIDIA GPU and SoC products include memory controllers designed to meet current industry standards for GDDR, LPDDR, and HBM specifications. Risk of successful exploitation from Rowhammer attacks varies based on DRAM device, platform, design specification, and system settings. NVIDIA continues to recommend the following existing DRAM mitigations to prevent or lessen the likelihood of Rowhammer attacks including: Ensuring System level ECC is enabled across the following NVIDIA products (see “Enabling SYS-ECC” below): …Read More