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PYSEC-2025-61

Details

Pillow is a Python imaging library. In versions 11.2.0 to before 11.3.0, there is a heap buffer overflow when writing a sufficiently large (>64k encoded with default settings) image in the DDS format due to writing into a buffer without checking for available space. This only affects users who save untrusted data as a compressed DDS image. This issue has been patched in version 11.3.0.

Are you affected?

Enter the version of the package you're using.

Affected packages

PyPI / pillow

Introduced in: 0 Fixed in: 89f1f4626a2aaf5f3d5ca6437f41def2998fbe09

Fix pip install --upgrade 'pillow>=89f1f4626a2aaf5f3d5ca6437f41def2998fbe09'

References

https://github.com/python-pillow/Pillow/security/advisories/GHSA-xg8h-j46f-w952 [ADVISORY]
https://github.com/python-pillow/Pillow/commit/ef98b3510e3e4f14b547762764813d7e5ca3c5a4 [FIX]
https://github.com/python-pillow/Pillow/pull/9041 [WEB]
https://github.com/python-pillow/Pillow/releases/tag/11.3.0 [WEB]