Provide references for CVE-2019-6976.
Where can I find more information about CVE-2019-6976?
References are available at: https://github.com/libvips/libvips/commit/00622428bda8d7521db8d74260b519fa41d69d0a, https://github.com/libvips/libvips/releases/tag/v8.7.4, https://blog.silentsignal.eu/2019/04/18/drop-by-drop-bleeding-through-libvips/.