Bug 2570009 (CVE-2026-125188)

Summary: CVE-2026-125188 ffmpeg: ffmpeg: Information disclosure via out-of-bounds read during ProRes encoding
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: bbrownin
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in FFmpeg. An attacker could exploit this flaw by providing specially crafted video input featuring interlaced frames with an odd height to the ProRes encoder. This causes an out-of-bounds read from memory during frame processing, which can lead to information disclosure by leaking sensitive heap memory contents into the encoded video output.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2026-11-10 19:30:37 UTC 
FFmpeg through 9.0.2 contains a heap out-of-bounds read vulnerability in libavcodec/proresenc_anatoliy.c that occurs when the prores_aw encoder processes interlaced, odd-height frames. Attackers can supply odd-height video that causes subimage_with_fill_template() to fill padding rows from memory before the fill_y buffer, leaking heap contents into the encoded output.