Bug 2570710 (CVE-2026-125066)

Summary: CVE-2026-125066 ffmpeg: ffmpeg: Denial of Service via crafted CLJR video frame
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 cause a Denial of Service (DoS) by tricking a user into opening a specially crafted video file. When decoding malformed Cirrus Logic AccuPak (CLJR) video frames, improper error handling causes the application to read from invalid memory and crash.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2026-11-10 20:17:04 UTC
FFmpeg through 9.0.2 contains a NULL pointer dereference vulnerability in the Cirrus Logic AccuPak (CLJR) decoder in libavcodec/cljrdec.c because decode_frame() ignores init_get_bits() failure. Attackers can supply a crafted AVI file with a 2^28-byte CLJR frame that overflows the bit count, causing reads from a NULL buffer and crashing the process.