GPUBreach exploit uses GPU memory bit-flips to achieve full system takeover

A newly discovered exploit, known as GPUBreach, leverages GPU memory bit-flips to achieve full system takeover by escalating privileges. This technique exploits RowHammer bit-flips in GPU memory, specifically GDDR6, to bypass traditional security measures. Unlike its predecessors, such as GPUHammer, GPUBreach demonstrates that GPU memory faults can have a direct impact on CPU-level security, amplifying the severity of the threat. The GPUBreach attack technique can be used to corrupt data and potentially gain full control of a system, highlighting the vulnerability of GPU memory to RowHammer attacks¹. This development is significant, as it underscores the importance of considering GPU security in the overall system security posture. So what matters to practitioners is that GPUBreach shows GPU memory faults can directly compromise CPU-level security, making it a critical concern for system defenders.