Rowhammer Attack Against NVIDIA Chips

A new rowhammer attack, GDDRHammer, gives complete control of NVIDIA CPUs by inducing bitflips in GDDR memory, allowing attackers to gain arbitrary read/write access to all CPU memory. This is a serious threat, as it can result in full system compromise of the host machine. Researchers have demonstrated the attack on multiple NVIDIA GPUs, including the RTX 3060 and RTX 6000. IOMMU memory management must be disabled for the attack to work, but a new attack, GeForge, can work even with IOMMU enabled. This is a significant vulnerability that requires immediate attention.