GPUBreach: New GPU Rowhammer Attack Achieves Root Shell Access
Researchers from the University of Toronto have discovered a new Rowhammer attack, named GPUBreach, that targets GPU memory to escalate privileges and achieve root shell access. This attack exploits the Rowhammer technique, which induces bit flips in memory cells through repeated access, to corrupt GPU page tables and enable arbitrary read-write access. The attack leverages memory-safety bugs in Nvidia drivers, posing a significant threat to cloud environments where multiple users share the same GPU. The researchers reported their findings to Nvidia, and major cloud providers like Microsoft, AWS, and Google have been notified. 
