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executorch-method-tensorlist-items-vector-oob-poc

ExecuTorch
security
poc
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Harmless PoC: ExecuTorch nested TensorList/OptionalTensorList items length OOB

Method::parse_values → parseTensorList indexes TensorList.items[j] using a forged FlatBuffer vector length with no bound against the program buffer. Under default Program::Verification::Minimal, loading a malicious .pte and calling Method::load triggers ASan heap-buffer-overflow READ at tensor_parser_exec_aten.cpp:98 (via method.cpp:618).

Distinct from packaged IntList/BoolList/DoubleList items and top-level values/chains/instructions/operators/delegates/backend_delegate_data.

Files

  • poc_method_tensorlist_items_asan.cpp, asan.log (tensorlist-items-oob)
  • related: optional-tensorlist-items-oob
  • NOTES.md
./poc_method_tensorlist_items_asan tensorlist-items-oob
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