CVE-2026-73558 (GCVE-0-2026-73558)
Vulnerability from cvelistv5
Published
2026-08-13 15:06
Modified
2026-08-13 15:38
Severity ?
5.3 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
CWE
  • CWE-190 - Integer Overflow or Wraparound
Summary
vLLM is an inference and serving engine for large language models. Prior to 0.27.0, an integer overflow in blockIdx.x * 2 * d in activation_kernels.cu can cause act_and_mul_kernel to consume another batched user's input, allowing a request processed in the same inference batch to receive a partial or complete copy of another user's inference result. This issue is fixed in version 0.27.0.
References
Impacted products
Vendor Product Version
vllm-project vllm Version: < 0.27.0
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