Provide references for CVE-2021-30123.
Where can I find more information about CVE-2021-30123?
References are available at: https://trac.ffmpeg.org/ticket/8845, http://git.videolan.org/?p=ffmpeg.git%3Ba=commitdiff%3Bh=d6f293353c94c7ce200f6e0975ae3de49787f91f, https://trac.ffmpeg.org/ticket/8863, https://security.gentoo.org/glsa/202105-24.