AMD: Ryzen CPUs not affected by SPOILER vulnerability

Earlier this month, security researchers disclosed the existence of SPOILER, a security vulnerability in Intel CPUs that enables cybercriminals to perform Rowhammer attacks more efficiently. At the time, it wasn't clear whether AMD processors were vulnerable to this threat.

AMD has now released a statement that it believes its CPUs are not vulnerable to SPOILER:

We are aware of the report of a new security exploit called SPOILER which can gain access to partial address information during load operations. We believe that our products are not susceptible to this issue because of our unique processor architecture. The SPOILER exploit can gain access to partial address information above address bit 11 during load operations. We believe that our products are not susceptible to this issue because AMD processors do not use partial address matches above address bit 11 when resolving load conflicts.