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6.3 Medium

CVE-2026-93841 vLLM through 0.29.0 contains a memory corruption vulnerability in the Triton _bincount_kernel where prompt token IDs…

Description

vLLM through 0.29.0 contains a memory corruption vulnerability in the Triton _bincount_kernel where prompt token IDs index the penalty prompt-presence bitset without bounds checking against vocabulary size. Attackers can submit multimodal audio requests with tokens equal to vocabulary size, causing out-of-bounds writes that corrupt concurrent requests' sampler state and alter repetition penalty behavior.

Affected products and versions

Product Affected versions Fixed in
vllm 0.29 earliest → 0.29.0 No fix stated

References

Timeline

  1. Published
  2. Last modified

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