GHSA-Q69G-F4F5-V8M7 ONNX: Denial of service via unchecked expansion of packed sub-byte tensors in ONNX Python APIs

Summary ONNX's Python tensor-materialization helpers could allocate memory according to attacker-controlled tensor dimensions without verifying that a packed sub-byte payload contained the declared number of elements. A very small model could therefore cause a disproportionately large allocation...