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orc-deeper-poc-type-recursion-stack-overflow-2026-05-12

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Apache ORC deep type recursion stack overflow PoC

Authorized bug bounty research artifact for Apache ORC C++ parser testing.

Reproducer

Built and reproduced against apache/orc commit fbc8c8771864ce08127a843237534b4f50f3e256 with AppleClang ASAN:

git clone --depth 30 https://github.com/apache/orc /tmp/runtime-audit/orc
cd /tmp/runtime-audit/orc
cmake -S . -B build-asan -DBUILD_CPP_TESTS=ON -DCMAKE_BUILD_TYPE=Debug \
  -DCMAKE_C_FLAGS='-fsanitize=address -fno-omit-frame-pointer' \
  -DCMAKE_CXX_FLAGS='-fsanitize=address -fno-omit-frame-pointer' \
  -DCMAKE_EXE_LINKER_FLAGS='-fsanitize=address' \
  -DCMAKE_SHARED_LINKER_FLAGS='-fsanitize=address'
cmake --build build-asan --parallel 8
ASAN_OPTIONS=abort_on_error=1:detect_leaks=0:symbolize=1 \
  build-asan/tools/src/orc-contents payloads/deep-type-10000.orc

Expected result: AddressSanitizer: stack-overflow in orc::convertType at c++/src/TypeImpl.cc:569.

Files

payloads/deep-type-10000.orc: crashing PoC.
payloads/deep-type-1000.orc: non-crashing control in this environment.
payloads/baseline-empty-none.orc: upstream empty ORC baseline.
logs/deep-type-10000.orc-contents.stderr: ASAN crash from orc-contents.
logs/deep-type-10000.orc-metadata.stderr: ASAN crash from orc-metadata.
scripts/mutate_orc.py: local generator used for footer/type mutations.

Hashes

b0f5006ebfaf64509fa54dcf9c525cc3499f19d24738a6f713efe387b568a24f  payloads/deep-type-10000.orc
17f8b0213d074518d749604133916f8d6a275a073801d0293814ad99d4e40053  payloads/deep-type-1000.orc
ce3d39efd750057845ec9b81f99a6192643cd726cba3a09ae333d5e075e82266  payloads/baseline-empty-none.orc

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