Medium severity5.5NVD Advisory· Published Nov 9, 2026

CVE-2026-125231

Description

FFmpeg 4.4 through 9.0.2 contains a NULL pointer dereference vulnerability in libavcodec/adxdec.c because adx_decode_header() updates the channel layout before validating the sample rate. Attackers can supply a crafted ADX/AAX stream with mid-stream new-extradata side data carrying an invalid sample rate, causing adx_decode() to write through NULL plane pointers and crash the application.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

FFmpeg/Ffmpegllm-fuzzy
Range: 4.4 through 9.0.2

Patches

Vulnerability mechanics

References

code.ffmpeg.org/FFmpeg/FFmpeg/pulls/25703nvd
github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/adxdec.cnvd
github.com/FFmpeg/FFmpeg/commit/515dcad73d77711507083cae3913c9327c0977c6nvd
www.vulncheck.com/advisories/ffmpeg-4.4-through-9.0.2-null-pointer-dereference-via-adx-decode-headernvd

News mentions

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cvss	0.358
epss	0.000
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000