GPUThor hardware attack can root Nvidia GPU systems

Hardware security researchers from University of Toronto have developed a new memory bit flipping technique that significantly improves on previously known attacks against GPU memory. The new method can defeat the error-correcting codes (ECC) defense used on enterprise Nvidia GPUs and can lead to root access on the underlying system. Dubbed GPUThor, the technique falls in a category of attacks known as Rowhammer that exploits the cell density of modern random access memory (RAM) chips.