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CVE PROGRAM SOURCE RECORD9.8 Critical

CVE-2026-84286

OOB Read/Write via Negative Array Index in exllamav3_ext Kernel Table

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Turboderp-org ExLlamaV3

  • 3affected

References