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hacnho/
openvino-topk-allocation-dos-poc

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OpenVINO TopK allocation DoS PoC

This repository contains two valid OpenVINO IR XML/BIN model pairs that differ only in the TopK input shape embedded in the model file.

Observed behavior with openvino==2026.2.1 under a 3 GiB address-space cap:

control model:
- read_model() succeeds
- compile_model() succeeds
- inference succeeds with output shape [1, 1]
malicious model:
- read_model() succeeds
- compile_model() raises RuntimeError: std::bad_alloc

Public repo:

Repo: https://huggingface.co/hacnho/openvino-topk-allocation-dos-poc
Control XML: https://huggingface.co/hacnho/openvino-topk-allocation-dos-poc/resolve/main/control_topk_2.xml
Control BIN: https://huggingface.co/hacnho/openvino-topk-allocation-dos-poc/resolve/main/control_topk_2.bin
Malicious XML: https://huggingface.co/hacnho/openvino-topk-allocation-dos-poc/resolve/main/malicious_topk_300m.xml
Malicious BIN: https://huggingface.co/hacnho/openvino-topk-allocation-dos-poc/resolve/main/malicious_topk_300m.bin
Reproducer: https://huggingface.co/hacnho/openvino-topk-allocation-dos-poc/resolve/main/reproduce.py
Repo state at verification time: private=false, commit <fill after upload>

Reproduction:

bash

python3 build_poc.py
python3 reproduce.py