Phoenix: Rowhammer Attacks on DDR5 Memory

Summary  

Researchers were able to use rowhammering techniques on DDR5 memory to obtain bitflips in order to escalate privileges.AMD believes this to be a memory issue. Susceptibility to rowhammer attacks varies based on the DRAM device, vendor, technology, and system settings. AMD recommends contacting your DRAM or system manufacturer to determine susceptibility.

The following AMD products support DDR5 memory.

• AMD EPYC™ 8004 Series Processors
• AMD EPYC™ 9004 Series Processors
• AMD EPYC™ 9005 Series Processors
• AMD EPYC™ 9004 Embedded Series Processors
• AMD EPYC™ 9005 Embedded Series Processors
• AMD Ryzen™ 6000 Series Processors with Radeon™ Graphics
• AMD Ryzen™ 7000 Series Processors with Radeon™ Graphics
• AMD Ryzen™ 7035 Series Processors with Radeon™ Graphics
• AMD Ryzen™ 7040 Series Processors with Radeon™ Graphics
• AMD Ryzen™ 7045 Series Processors with Radeon™ Graphics
• AMD Ryzen™ 8000 Series Desktop Processors
• AMD Ryzen™ 8040 Series Mobile Processors with Radeon™ Graphics
• AMD Ryzen™ 9000 Series Desktop Processors
• AMD Ryzen™ 9000HX Series Processors
• AMD Ryzen™ AI 300 Series Processors
• AMD Ryzen™ AI Max 300 Series Processors
• AMD Ryzen™ Threadripper™ 7000 Processors
• AMD Ryzen™ Threadripper™ 9000 Processors
• AMD Ryzen™ Embedded 7000 Series
•  AMD Ryzen™ Embedded 8000 Series
• AMD Ryzen™ Embedded 9000 Series

Acknowledgement  

AMD thanks Diego Meyer, Patrick Jattke, Michele Marazzi, Salman Qazi (Google), Daniel Moghimi (Google), and Kaveh Razavi ETH Zurich for reporting this issue and engaging in coordinated vulnerability disclosure.

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