This update for SDL fixes the following issues: - CVE-2020-14410: Fixed a heap-based buffer over-read in Blit_3or4_to_3or4__inversed_rgb in video/SDL_blit_N.c . - CVE-2019-7637: Fixed a heap-based buffer overflow in SDL_FillRect in video/SDL_surface.c . - CVE-2021-33657: Fix a buffer overflow when parsing a crafted BMP image . - CVE-2020-14409: Fixed an integer overflow in SDL_BlitCopy in video/SDL_blit_copy.c .