GPU Rowhammer Is Real: How GPUHammer Hijacks NVIDIA Graphics Memory [2026 Breakdown]

GPU Rowhammer Is Real: How GPUHammer Hijacks NVIDIA Graphics Memory [2026 Breakdown] Eight bit-flips across four memory rows. That's what researchers from Georgia Tech achieved on a stock NVIDIA GPU with GDDR6 DRAM last year, and it should worry anyone running GPU compute in production. For over a decade, Rowhammer has been the hardware vulnerability that refuses to die. Every time the industry builds a defense, researchers punch through it. But it was always a CPU memory problem — DRAM attached to your processor, targeted through careful cache manipulation. That changed when the GPUHammer paper dropped at USENIX Security 2025, proving the same attack works on NVIDIA GPUs. Nobody was building defenses for this. Almost nobody still is. I've spent years working with systems that depend on GPU compute for inference workloads and rendering pipelines. The idea that an attacker could corrupt GPU memory with the same physics-level trick that plagued CPUs isn't just academically interesting. I