CVE-2023-46407 Information

Description

FFmpeg prior to commit bf814 was discovered to contain an out of bounds read via the dist->alphabet_size variable in the read_vlc_prefix() function.

Reference

https://github.com/FFmpeg/FFmpeg/commit/bf814387f42e9b0dea9d75c03db4723c88e7d962 https://patchwork.ffmpeg.org/project/ffmpeg/patch/20231013014959.536776-1-leo.izen@gmail.com/ https://patchwork.ffmpeg.org/project/ffmpeg/patch/20231015004924.597746-1-leo.izen@gmail.com/