An inconsistent bits-per-sample value in the ffmpeg4decodepictureheader function in libavcodec/mpeg4videodec.c in FFmpeg 4.0 may trigger an assertion violation while converting a crafted AVI file to MPEG4, leading to a denial of service.
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-12459.json"