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.
References
Configurations
History
28 Sep 2026, 18:35
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Vllm vllm
Vllm |
|
| CPE | cpe:2.3:a:vllm:vllm:*:*:*:*:*:*:*:* | |
| References | () https://github.com/vllm-project/vllm - Product | |
| References | () https://github.com/vllm-project/vllm/blob/v0.29.0/vllm/v1/worker/gpu/sample/penalties.py#L241-L255 - Product | |
| References | () https://github.com/vllm-project/vllm/blob/v0.29.0/vllm/v1/worker/gpu/sample/penalties.py#L33-L37 - Product | |
| References | () https://github.com/vllm-project/vllm/pull/49081 - Issue Tracking, Patch | |
| References | () https://www.vulncheck.com/advisories/vllm-through-0.29.0-adjacent-request-sampler-state-corruption-via-unvalidated-prompt-token-ids - Third Party Advisory |
18 Sep 2026, 20:17
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-09-18 20:17
Updated : 2026-09-28 18:35
NVD link : CVE-2026-93841
Mitre link : CVE-2026-93841
CVE.ORG link : CVE-2026-93841
JSON object : View
Products Affected
vllm
- vllm
CWE
CWE-129
Improper Validation of Array Index