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NOTTIBOI1337/
poc-ollama-gguf-readstring-overflow

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PoC: Integer Signedness Bug in Ollama GGUF readString() — Denial of Service

Target: ollama/ollama File: fs/gguf/gguf.go line 194 Type: CWE-195 — Signed to Unsigned Conversion Error CVSS: 5.3 (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L) Affected version: commit 06edabd (latest master, Feb 22 2026) Bounty program: huntr.com OSV

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poc_readstring.gguf 36-byte malicious GGUF: string length = 0x8000000000000001

generate_poc.py… See the full description on the dataset page: https://huggingface.co/datasets/NOTTIBOI1337/poc-ollama-gguf-readstring-overflow.