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 corruptions across memory space, potentially resulting in a denial of service or privileges escalation scenarios. The highest threat from this vulnerability is to system availability.

Mitigation

Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update as soon as possible.