CVE-2026-112402
Description
Pillow is a Python imaging library. Prior to 13.0.0, Pillow can double free image memory when ImagingScaleAffine encounters a selective allocation failure. The affected fast path handles Transform.EXTENT or pure scale-and-translate Transform.AFFINE operations with the default NEAREST resampling. The output image allocation must succeed while the additional per-column lookup allocation fails, after which the error path deletes image storage that later cleanup releases again. An attacker who can drive such a large Image.transform() operation under memory pressure may trigger the failure. This can crash the process and may corrupt memory. This issue is fixed in version 13.0.0.
How to fix
- python pillow13.0.0 or later
- pillow13.0.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| python pillow | v < 13.0.0 | 13.0.0 |
| pillowPyPI | v < 13.0.0 | 13.0.0 |
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