Bug 2569596 (CVE-2026-125189)

Summary: CVE-2026-125189 ffmpeg: ffmpeg: Denial of Service via crafted LCEVC metadata
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 cause a Denial of Service (DoS) by tricking a user or service into processing specially crafted Low Complexity Enhancement Video Coding (LCEVC) metadata. Due to an internal processing mismatch in the LCEVC metadata bitstream filter, handling the malformed input triggers an assertion failure, resulting in an application crash.
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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 13:09:52 UTC
FFmpeg 8.1 through 9.0.2 contains a denial of service vulnerability in the lcevc_metadata bitstream filter caused by a process block position mismatch in lcevc_metadata_handle_vui(). Attackers can supply crafted LCEVC access units with two IDR or non-IDR NAL units to trigger an av_assert0 failure in ff_cbs_lcevc_list_add(), aborting the application.