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Popular GPUs Used AI Systems Vulnerable to Memory Leak Flaw [Video]

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LeftoverLocals Affects Apple, AMD and Qualcomm Devices (asokan_akshaya) • January 18, 2024    

Researchers from Trail of Bits said they can reproduce LLM chat sessions through an attack on a GPU. (Image: Shutterstock)

Researchers uncovered a critical vulnerability in graphic processing units of popular devices that could allow attackers to access data from large language models.

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The flaw, dubbed LeftoverLocals, affects the GPU frameworks of Apple, AMD and Qualcomm devices. Researchers at security firm Trail of Bits, who uncovered the flaw, said it stems from how the affected devices don’t isolate kernel memory, allowing an attacker to simply write GPU kernel code to prompt the targeted devices to dump data from memory.

To orchestrate the hack, the researchers used llama.cpp, Meta’s open-source LLM model, on AMD Radeon RX 7900 XT GPU. They also used open-source …

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