Heap-buffer-overflow write in FFmpeg EXR dwa_uncompress_CVE-2025-59732

8.7 / 10

HIGH

CVSS:4.0/AV:A/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N

Description

When decoding an OpenEXR file that uses DWAA or DWAB compression, there's an implicit assumption that the height and width are divisible by 8.

If the height or width of the image is not divisible by 8, the copy loops at [0] and [1] will continue to write until the next multiple of 8.

The buffer td->uncompressed_data is allocated in decode_block based on the precise height and width of the image, so the "rounded-up" multiple of 8 in the copy loop can exceed the buffer bounds, and the write block starting at [2] can corrupt following heap memory.

We recommend upgrading to version 8.0 or beyond.

Basic Information

ID CVE-2025-59732

Source Google

Published Oct 6, 2025 at 08:09

Affected Product

Vendor FFmpeg

Product FFmpeg

Version 9a32b863074ed4140141e0d3613905c6f1fe61c5

Affected Versions FFmpeg FFmpeg 9a32b863074ed4140141e0d3613905c6f1fe61c5
FFmpeg FFmpeg 7.1.1

CWE Classification

CWE-787

References

b.corp.google.com /issues/436510316

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