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TFLite (.tflite) Integer Overflow PoC
CWE-190/CWE-125: offset+size uint64_t overflow in interpreter_builder.cc:671 -> OOB READ
Bug
Buffer offset and size (both uint64_t from flatbuffer) overflow when added in bounds check at interpreter_builder.cc:671. The overflowed sum passes the check, but the original offset is used for pointer arithmetic, yielding an OOB pointer.
Example: offset=0xFFFFFFFFFFFFFF00, size=0x200 -> offset+size=0x100 (overflows) -> check passes -> pointer goes 18 EB past buffer.
Second instance at line 378-380 for large_custom_options_offset + large_custom_options_size.
Build & Run
g++ -std=c++17 -fsanitize=address -g -O0 -o harness harness.cpp
./harness # Buffer offset overflow -> SEGV
./harness custom # large_custom_options overflow -> heap-OOB
./harness heap # Buffer offset heap-buffer-overflow
ASAN Output
==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x...
READ of size 1 at 0x... thread T0
Verification NOT invoked by default in InterpreterBuilder.
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