Provide references for CVE-2021-3566.
Where can I find more information about CVE-2021-3566?
References are available at: https://github.com/FFmpeg/FFmpeg/commit/3bce9e9b3ea35c54bacccc793d7da99ea5157532#diff-74f6b92a0541378ad15de9c29c0a2b0c69881ad9ffc71abe568b88b535e00a7f, https://lists.debian.org/debian-lts-announce/2021/08/msg00018.html.