Provide references for CVE-2020-22020.
Where can I find more information about CVE-2020-22020?
References are available at: https://trac.ffmpeg.org/ticket/8239, http://git.videolan.org/?p=ffmpeg.git%3Ba=commitdiff%3Bh=ce5274c1385d55892a692998923802023526b765, https://lists.debian.org/debian-lts-announce/2021/08/msg00018.html, https://www.debian.org/security/2021/dsa-4990.