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Fixed bug 4538 - validate image size when loading BMP files

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slouken committed Jul 30, 2019
1 parent 738dff4 commit 97fefd050976bbbfca9608499f6a7d9fb86e70db
Showing with 5 additions and 0 deletions.
  1. +5 −0 src/video/SDL_bmp.c
@@ -226,6 +226,11 @@ SDL_LoadBMP_RW(SDL_RWops * src, int freesrc)
SDL_RWseek(src, (biSize - headerSize), RW_SEEK_CUR);
}
}
if (biWidth <= 0 || biHeight == 0) {
SDL_SetError("BMP file with bad dimensions (%dx%d)", biWidth, biHeight);
was_error = SDL_TRUE;
goto done;
}
if (biHeight < 0) {
topDown = SDL_TRUE;
biHeight = -biHeight;

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