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Rowhammer

All articles tagged with #rowhammer

technology6 months ago•2 min saved

GPUHammer Attack Severely Impairs AI Accuracy on Nvidia GDDR6 GPUs

Researchers from the University of Toronto demonstrated that GPUHammer, a RowHammer-style attack, can induce single-bit flips in GDDR6 memory on NVIDIA RTX A6000 GPUs, drastically reducing AI model accuracy from 80% to below 1%. The attack exploits vulnerabilities in DRAM banks, but enabling ECC can mitigate the risk. The vulnerability affects certain high-end GPUs but not others like the RTX 5090 or data center cards with HBM memory.

via Wccftech|

#ai-model-accuracy #gddr6 #gpuhammer

security6 months ago•5 min saved

Nvidia GPUs vulnerable to new Rowhammer attack compromising AI models

Nvidia warns that some of its GPUs, including Blackwells, are vulnerable to Rowhammer attacks if System-Level ECC is not enabled, and advises users to activate this mitigation. Meanwhile, automotive and communication systems face security risks from Bluetooth vulnerabilities and deepfake scams, with recent incidents involving car hacking, insecure messaging apps, and fake voice calls targeting public figures. Additionally, a major Bitcoin ATM network suffered a data breach affecting thousands of users, highlighting ongoing cybersecurity threats across various sectors.

via theregister.com|

#ecc #gpu #nvidia

technology6 months ago•4 min saved

GPUHammer: New RowHammer Attack Threatening NVIDIA GPUs

Researchers have demonstrated GPUHammer, a new RowHammer attack variant targeting NVIDIA GPUs that can cause severe degradation of AI model accuracy by inducing bit flips in GPU memory. The attack poses significant risks to AI infrastructure, especially in shared environments, and can be mitigated by enabling ECC, though at some performance cost. This development highlights ongoing vulnerabilities in GPU memory security and the importance of robust defenses for AI systems.

via The Hacker News|

#ai-model-degradation #gpuhammer #memory-security