New Rowhammer attack exploits the design of ever-shrinking and more dense DRAM chips

Google has detailed its work discovering a new Rowhammer vulnerability dubbed “Half-Double”, which evolves the style of attack on DRAM memory first reported in 2014 and suggests the Rowhammer problem won’t go away soon.

The Rowhammer attack is unusual because it aims to cause “bit flips” by rapidly and repeatedly accessing data in one memory row on a RAM chip to create an electrical charge that changes data stored in other addresses in an adjacent “memory row” on a chip. The attacking memory rows are called “aggressors” and the rows where bit flips occur are called “victim rows”.

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Source: ZDNet