Bug 2570246 (CVE-2026-125241)

Summary: CVE-2026-125241 ffmpeg: ffmpeg: arbitrary code execution via crafted FLIC video file
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. This vulnerability allows an attacker to achieve arbitrary code execution or cause an application crash leading to a Denial of Service (DoS). By tricking a user or system into processing a specially crafted FLIC animation file, an attacker can trigger incomplete boundary checks during frame decoding. This flaw results in pixel data being written beyond allocated memory boundaries, causing heap memory corruption.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2026-11-10 19:45:44 UTC
FFmpeg through 9.0.2 contains a heap buffer overflow vulnerability in libavcodec/flicvideo.c that allows attackers to write out of bounds because check_pixel_ptr() checks only one bound with negative-stride frames. Attackers can supply a crafted FLIC file whose RLE and delta chunks write pixel data past frame storage, corrupting heap memory to crash applications or possibly execute code.