CVE-2026-84286 — OOB Read/Write via Negative Array Index in exllamav3_ext Kernel Table
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 …
Published: 2026-10-12 · CVSS: 9.8 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7