CyberRota Analysis
AI-GeneratedThe tokenizers library from Hugging Face is vulnerable to an out-of-bounds buffer access that can lead to denial of service when loading a crafted tokenizer.json file. This vulnerability can cause the application to panic and abort the process, impacting any systems utilizing this library for natural language processing tasks. Organizations using version 0.23.1 or earlier should prioritize patching this issue to mitigate potential disruptions in service.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
tokenizers (Hugging Face) is affected by an out-of-bounds buffer access in BpeBuilder::build (tokenizers/src/models/bpe/model.rs). When loading a tokenizer.json via Tokenizer::from_file/from_str, the builder sizes a scratch buffer to the longest vocabulary key, then writes each concatenated merge rule into it. A merge whose concatenated token exceeds the longest vocabulary key overruns the buffer, which Rust turns into a panic that aborts the process in Rust and FFI embeddings. This occurs at load time with no encoding required, so an attacker who supplies a crafted tokenizer.json can cause a denial of service. A secondary defect at the same location can cause a usize underflow (panic in debug, potential memory corruption in release) when continuing_subword_prefix is set and a merge token is shorter than the prefix. Observed in version 0.23.1.