Provide references for CVE-2019-19721.
Where can I find more information about CVE-2019-19721?
References are available at: https://www.videolan.org/security/, http://hg.libsdl.org/SDL_image/, https://bugs.gentoo.org/721940, https://git.videolan.org/?p=vlc/vlc-3.0.git%3Ba=commit%3Bh=72afe7ebd8305bf4f5360293b8621cde52ec506b.