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CVE-2026-70659

7.8 high

High (7.8) in leejet stable-diffusion.cpp.

On this page
stable-diffusion.cpp is a pure C/C++ library for running diffusion model (Stable Diffusion, Flux, Wan, Qwen Image, Z-Image, and more) inference. From master-742-1a13107 until master-763-4fcc6fe, IMatrixCollector::load_imatrix in src/runtime/imatrix.cpp reuses the values and counts vectors for entries with the same tensor name but resizes them only when they are empty. An untrusted .imatrix file can provide a small nval for the first entry and a larger nval for a second entry with the same name, causing the accumulation loop to write attacker-controlled floating-point and integer values beyond both heap buffers. Loading the file through the --imat-in conversion path can corrupt the heap or crash the process before a model is required. This issue is fixed in master-763-4fcc6fe.

Severity

CVSS 3.1

7.8 high
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWEs
CWE-787 Out-of-bounds Write
CWE-1284 Improper Validation of Specified Quantity in Input
Published
Record from
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Affected

Versions

From the CNA's record in the CVE List.

ProductAffected
leejet stable-diffusion.cpp< master-763-4fcc6fe

References

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