Nvidia warns users some GPUs could be at risk of damaging cyberattack - here's what we know

• Security researchers from University of Toronto warn on Rowhammer flaw
• Older GPUs seem to be vulnerable
• Nvidia urges users to update as soon as possible

Nvidia is urging users to apply mitigations it provided against so-called Rowhammer attacks after new research confirmed their potential to cause serious and stealthy hardware-level compromises.

Rowhammer is an exploit of a vulnerability in dynamic RAM (DRAM), where repeatedly accessing (or "hammering") a row of memory can cause bit flips in adjacent rows. As a result, threat actors could bypass security boundaries, triggering privilege escalations, data tampering, or even denial-of-service states.

Although this is a hardware-level issue, software-based techniques can trigger and weaponize the flaw remotely.