Description
ExLlamaV3’s EXL3 loader uses an untrusted, model-supplied index to select a CUDA kernel without first verifying that the index is within bounds. A malicious model can force the code to read and invoke an out‑of‑range function pointer, resulting in a reproducible crash. Under specific conditions involving certain host memory layouts, it may be possible for an attacker to exploit this vulnerability to achieve controlled indirect kernel dispatch during model load.
Published: 2026-10-12
Score: n/a
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Mon, 19 Oct 2026 12:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-125
CWE-20
CWE-787
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 13 Oct 2026 07:45:00 +0000

Type Values Removed Values Added
First Time appeared Turboderp-org
Turboderp-org exllamav3
Vendors & Products Turboderp-org
Turboderp-org exllamav3

Mon, 12 Oct 2026 19:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-126
CWE-188

Mon, 12 Oct 2026 18:30:00 +0000

Type Values Removed Values Added
References

Mon, 12 Oct 2026 17:15:00 +0000

Type Values Removed Values Added
Description ExLlamaV3’s EXL3 loader uses an untrusted, model-supplied index to select a CUDA kernel without first verifying that the index is within bounds. A malicious model can force the code to read and invoke an out‑of‑range function pointer, resulting in a reproducible crash. Under specific conditions involving certain host memory layouts, it may be possible for an attacker to exploit this vulnerability to achieve controlled indirect kernel dispatch during model load.
Title OOB Read/Write via Negative Array Index in exllamav3_ext Kernel Table
References

Subscriptions

Turboderp-org Exllamav3
cve-icon MITRE

Status: PUBLISHED

Assigner: certcc

Published:

Updated: 2026-10-19T11:04:47.147Z

Reserved: 2026-09-01T15:47:57.172Z

Link: CVE-2026-84286

cve-icon Vulnrichment

Updated: 2026-10-12T17:14:02.436Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-12T17:17:35.873

Modified: 2026-10-19T12:17:10.860

Link: CVE-2026-84286

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-19T13:45:05Z

Weaknesses