New GPUThor Rowhammer Defeats ECC on NVIDIA RTX A6000 to Gain Host Root Access

Researchers have developed an attack called GPUThor, a Rowhammer exploit that affects NVIDIA workstation GPUs with GDDR6 memory. This attack defeats error correction codes, a mitigation recommended by NVIDIA to prevent GPU Rowhammer attacks. The GPUThor attack enables denial-of-service and privilege escalation, allowing access to a root shell. The attack was created by academics at the University of Toronto, who targeted four DRAM locations. The vulnerability impacts NVIDIA RTX A6000 GPUs. The attack allows for host root access, posing a significant security risk.