Harmless PoC: ExecuTorch Program::get_backend_delegate_data vector length OOB
Program::get_backend_delegate_data indexes Program.backend_delegate_data[index] 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 (FakeBackend INLINE delegate) triggers ASan heap-buffer-overflow READ at program.cpp:547.
Distinct from packaged values/chains/instructions, READY operators/args, READY ExecutionPlan.delegates/compile_specs, READY constant/mutable offsets, MethodMeta sizes, #16704/#19904 null backend_delegate_data, Vela, VGF, Vulkan.
Files
poc_backend_delegate_data_asan.cpp,asan.logmethod_deps_stub.cpp(FakeBackend + Method link stubs)NOTES.md
./poc_backend_delegate_data_asan
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