Provide references for CVE-2021-40145.
Where can I find more information about CVE-2021-40145?
References are available at: https://github.com/libgd/libgd/commit/c5fd25ce0e48fd5618a972ca9f5e28d6d62006af, https://github.com/libgd/libgd/pull/713, https://github.com/libgd/libgd/issues/700.