Provide references for CVE-2021-40812.
Where can I find more information about CVE-2021-40812?
References are available at: https://github.com/libgd/libgd/commit/6f5136821be86e7068fcdf651ae9420b5d42e9a9, https://github.com/libgd/libgd/issues/750#issuecomment-914872385, https://lists.debian.org/debian-lts-announce/2024/04/msg00003.html.