As the researchers report, LeftoverLocals does not concern ordinary consumers, but developers of machine learning (ML) and large language models (LLM) models. The vulnerability exploits features of the GPU architecture and isolates memory by pumping out data. An attacker can “hack” the GPU via the programmable interface and dump data on the GPU.
LeftoverLocals provides high data download speeds, which poses a serious threat to the security of cloud computing platforms. For example, using an AI model with 7 billion parameters in a single call to the AMD Radeon RX 7900 XT graphics card, the data leak rate was 5.5 MB.
The researchers said they shared the vulnerability monitoring report and details with the mentioned GPU manufacturers.
Source: Ferra
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