CVE-2026-116816 — llama.cpp b5899 before b10261 Heap Out-of-Bounds Write via plamo2 Tokenizer

Affected: ggml-org llama.cpp

llama.cpp b5899 before b10261 contains a heap out-of-bounds write vulnerability in llm_tokenizer_plamo2::build that allows attackers to corrupt heap memory via crafted GGUF models. Attackers can supply BYTE-typed token text like <0x-1> whose negative parsed value writes token ids before the bytes_ buffer during model loading, causing crashes or potential code execution.

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CVE-2026-116816 — llama.cpp b5899 before b10261 Heap Out-of-Bounds Write via plamo2 Tokenizer