Bug 2571153 (CVE-2026-125067)

Summary: CVE-2026-125067 ffmpeg: ffmpeg: Denial of Service via crafted video frame in VBLE decoder
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 by providing a specially crafted media file containing an oversized video frame to the VBLE decoder. Because the decoder does not properly handle initialization failures, processing the file triggers a null pointer dereference, crashing the application and leading to a Denial of Service (DoS).
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Description OSIDB Bzimport 2026-11-10 20:43:01 UTC
FFmpeg through 9.0.2 contains a NULL pointer dereference vulnerability in vble_decode_frame() in libavcodec/vble.c because it ignores init_get_bits() failure on oversized packets. Attackers can supply a crafted AVI file with a 268435452-byte VBLE frame, causing reads from a NULL bit reader buffer that crash the process.