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.
Metrics
Affected Vendors & Products
References
History
Wed, 23 Sep 2026 00:15:00 +0000
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| Weaknesses | CWE-787 | |
| References |
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| Metrics |
threat_severity
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threat_severity
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Mon, 21 Sep 2026 21:30:00 +0000
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ssvc
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Fri, 18 Sep 2026 21:30:00 +0000
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| 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. | |
| Title | vLLM through 0.29.0 Adjacent-Request Sampler State Corruption via Unvalidated Prompt Token IDs | |
| First Time appeared |
Vllm
Vllm vllm |
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| Weaknesses | CWE-129 | |
| CPEs | cpe:2.3:a:vllm:vllm:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Vllm
Vllm vllm |
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| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: VulnCheck
Published: 2026-09-18T19:06:06.636Z
Updated: 2026-09-24T14:23:15.994Z
Reserved: 2026-09-18T18:16:52.304Z
Link: CVE-2026-93841
Updated: 2026-09-21T16:22:55.356Z
Status : Analyzed
Published: 2026-09-18T20:17:34.357
Modified: 2026-09-28T18:35:40.697
Link: CVE-2026-93841