Bug 2569624 (CVE-2026-125185)

Summary: CVE-2026-125185 ffmpeg: ffmpeg: Denial of Service via division by zero in film grain parsing
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
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 vulnerability to cause a Denial of Service (DoS) by enticing a user to process a specially crafted media file. Due to improper validation of film grain scaling parameters, the video decoder encounters a division by zero error, causing the application to terminate unexpectedly.
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Description OSIDB Bzimport 2026-11-10 13:17:03 UTC 
FFmpeg through 9.0.2 contains a division by zero vulnerability in ff_aom_parse_film_grain_sets() that fails to reject AFGS1 scaling points with repeated x values. Attackers can supply crafted HEVC or VVC files with zero-increment scaling points in T.35 SEI messages, causing generate_scaling() to divide by zero and crash the decoder.