4 papers
CnC-PRAC: Coalesce, not Cache, Per Row Activation Counts for an Efficient in-DRAM Rowhammer Mitigation
Chris S. Lin, Jeonghyun Woo, Prashant J. Nair +1
JEDEC has introduced the Per Row Activation Counting (PRAC) framework for DDR5 and future DRAMs to enable precise counting of DRAM row activations using per-row activation counts.…
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…
QPRAC: Towards Secure and Practical PRAC-based Rowhammer Mitigation using Priority Queues
Jeonghyun Woo, Chris S. Lin, Prashant J. Nair +2
JEDEC has introduced the Per Row Activation Counting (PRAC) framework for DDR5 and future DRAMs to enable precise counting of DRAM row activations. PRAC enables a holistic mitigati…
DAPPER: A Performance-Attack-Resilient Tracker for RowHammer Defense
Jeonghyun Woo, Prashant J. Nair
RowHammer vulnerabilities pose a significant threat to modern DRAM-based systems, where rapid activation of DRAM rows can induce bit-flips in neighboring rows. To mitigate this, st…