kc3-lang/SDL

2019-02-18T07:50:33

Fixed bug 4500 - Heap-Buffer Overflow in Map1toN pertaining to SDL_pixels.c Petr Pisar The reproducer has these data in BITMAPINFOHEADER: biSize = 40 biBitCount = 8 biClrUsed = 131075 SDL_LoadBMP_RW() function passes biBitCount as a color depth to SDL_CreateRGBSurface(), thus 256-color pallete is allocated. But then biClrUsed colors are read from a file and stored into the palette. SDL_LoadBMP_RW should report an error if biClrUsed is greater than 2^biBitCount.