BlockHammer: Preventing RowHammer at Low Cost by Blacklisting Rapidly-Accessed DRAM Rows

11 Feb 2021 Abdullah Giray Yağlıkçı Minesh Patel Jeremie S. Kim Roknoddin Azizi Ataberk Olgun Lois Orosa Hasan Hassan Jisung Park Konstantinos Kanellopoulos Taha Shahroodi Saugata Ghose Onur Mutlu

Aggressive memory density scaling causes modern DRAM devices to suffer from RowHammer, a phenomenon where rapidly activating a DRAM row can cause bit-flips in physically-nearby rows. Recent studies demonstrate that modern DRAM chips, including chips previously marketed as RowHammer-safe, are even more vulnerable to RowHammer than older chips... (read more)

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  • CRYPTOGRAPHY AND SECURITY
  • HARDWARE ARCHITECTURE