aTmHnTR/gguf-loadtime-parser-poc

Load-Time Division-by-Zero Crash in llama.cpp GGUF Metadata Parser

⚠️ This repository does not contain a machine learning model.
The file provided is intentionally malformed and exists solely for security research and vulnerability reproduction.

PoC Artifact

• poc_fp_exception.gguf

Affected Component

• llama.cpp — GGUF metadata parser

Vulnerability Summary

A malformed GGUF file can trigger a deterministic crash during model loading due to a division-by-zero condition in GGUF tensor shape validation.

The crash occurs at load time, before inference or tensor data processing, and results in immediate process termination.

Reproduction

From a llama.cpp build directory:

./llama-gguf poc_fp_exception.gguf r