Bug 2401797 (CVE-2025-59732)

Summary: CVE-2025-59732 FFmpeg: Heap-buffer-overflow write in FFmpeg EXR dwa_uncompress
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Priority: high    
Version: unspecifiedCC: gtanzill, jbuscemi
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2401828, 2401831, 2401834, 2401844, 2401846, 2401853, 2417678, 2401850, 2401858    
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Description OSIDB Bzimport 2025-10-06 09:01:18 UTC 
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.