Bug 2538419 (CVE-2026-94626) - CVE-2026-94626 vllm: vLLM: Denial of Service via unvalidated memory allocation parameter
Summary: CVE-2026-94626 vllm: vLLM: Denial of Service via unvalidated memory allocatio...
Keywords:
Status: NEW
Alias: CVE-2026-94626
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-22 18:31 UTC by OSIDB Bzimport
Modified: 2026-09-22 18:38 UTC (History)
4 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)

Description OSIDB Bzimport 2026-09-22 18:31:13 UTC 
vLLM through 0.29.0 fails to validate the tp_size parameter in kv_transfer_params on OpenAI-compatible completion endpoints, allowing attackers to allocate unbounded memory. Attackers can supply arbitrary tp_size values in prefill/decode disaggregated deployments to exhaust memory and trigger kernel OOM-kill of the decode worker process.
Note You need to log in before you can comment on or make changes to this bug.