Poor Rowhammer Fixes On DDR4 DRAM Chips Re-Enable Bit Flipping Attacks

Remember rowhammer vulnerability? A critical issue affecting modern DRAM dynamic random access memory chips that could allow attackers to obtain higher kernel privileges on a targeted system by repeatedly accessing memory cells and induce bit flips. To mitigate Rowhammer vulnerability on the late...

CVE-2020-10255

A Rowhammer flaw was found in latest DDR4 DRAM hardware chips. These chips implement Target Row Refresh TRR mitigation to prevent a Rowhammer flaw-induced bit corruption across memory space. An unprivileged system user may leverage this flaw and use Rowhammer attack variants to induce bit...