AI Summary

Hardware security researchers at the University of Toronto have created a new memory‑bit‑flipping technique called GPUThor that improves on earlier GPU Rowhammer attacks. GPUThor can bypass the error‑correcting codes (ECC) used on enterprise Nvidia GPUs, allowing an attacker to gain root access to the host system. The attack exploits the high cell density of modern RAM chips, a method first demonstrated in 2015 against DDR3 and DDR4 memory. The new technique represents a significant escalation in the threat to systems that rely on Nvidia GPUs for compute workloads.

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