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README.md

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+# TensorRT VULN-003: Inference DoS via Loop(INT64_MAX)
+
+## Vulnerability
+
+A 338-byte ONNX model with a Loop operator set to INT64_MAX iterations compiles
+to a valid TensorRT engine that hangs indefinitely during inference. No timeout
+mechanism exists in TensorRT's execute_async_v3().
+
+## Impact
+
+- Permanent denial of service for any TensorRT inference server
+- 338-byte model file causes infinite hang
+- Affects Triton, TensorRT-LLM, any TRT-based pipeline
+
+## Files
+
+| File | Description |
+|------|-------------|
+| vuln003_loop_dos.py | Main PoC script |
+| dos_loop.onnx | Malicious ONNX model (338 bytes) |
+| dos_loop.engine | Compiled TRT engine (20,252 bytes) |
+
+## Reproduction
+
+```bash
+pip install tensorrt onnx torch numpy
+python vuln003_loop_dos.py
+```
+
+## Results
+
+- Normal model inference (10 loop iterations): completes in 0.0s
+- DoS model inference (INT64_MAX iterations): hangs indefinitely
+- At 1 billion iterations/sec, would take 292 years to complete
+- No timeout, no warning, no error — must kill the process