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 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.
CVE-2026-84286
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-84286
ExLlamaV3
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "Turboderp-org",
"product": "ExLlamaV3",
"versions": [
{
"status": "affected",
"version": "3"
}
]
}
]- Related CVEs
- CVE-2026-84286
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #38797 · Revision 1
- Added to Heist Feed
- Publisher date