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cs.CR2025
GPUHammer: Rowhammer Attacks on GPU Memories are Practical
Chris S. Lin, Joyce Qu, Gururaj Saileshwar
Rowhammer is a read disturbance vulnerability in modern DRAM that causes bit-flips, compromising security and reliability. While extensively studied on Intel and AMD CPUs with DDR…
cs.CR2025
When Mitigations Backfire: Timing Channel Attacks and Defense for PRAC-Based RowHammer Mitigations
Jeonghyun Woo, Joyce Qu, Gururaj Saileshwar +1
Per Row Activation Counting (PRAC) has emerged as a robust framework for mitigating RowHammer (RH) vulnerabilities in modern DRAM systems. However, we uncover a critical vulnerabil…