Bug 2570648 (CVE-2026-125206)

Summary: CVE-2026-125206 ffmpeg: ffmpeg: Information disclosure via crafted interlaced video in ProRes encoder
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 out-of-bounds read vulnerability exists in the ProRes encoder when processing interlaced video frames with an odd height. By supplying a specially crafted video with transparency data to be encoded, an attacker could cause the application to read outside the allocated memory buffer and encode adjacent memory contents into the output video file. This flaw primarily results in information disclosure.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Description OSIDB Bzimport 2026-11-10 20:13:12 UTC 
FFmpeg through 9.0.2 contains an out-of-bounds read vulnerability in the prores_ks encoder's get_alpha_data() that reads before the blocks buffer for interlaced frames with odd heights. Attackers can supply video with alpha and odd height encoded to interlaced ProRes 4444, causing out-of-bounds memory to be encoded into the output alpha plane.