1From 97fefd050976bbbfca9608499f6a7d9fb86e70db Mon Sep 17 00:00:00 2001
2From: Sam Lantinga <slouken@libsdl.org>
3Date: Tue, 30 Jul 2019 11:00:00 -0700
4Subject: [PATCH] Fixed bug 4538 - validate image size when loading BMP files
5---
6Upstream-Status: Pending
7
8 src/video/SDL_bmp.c | 5 +++++
9 1 file changed, 5 insertions(+)
10
11diff --git a/src/video/SDL_bmp.c b/src/video/SDL_bmp.c
12index 8eadc5f..5b5e12c 100644
13--- a/src/video/SDL_bmp.c
14+++ b/src/video/SDL_bmp.c
15@@ -143,6 +143,11 @@ SDL_Surface * SDL_LoadBMP_RW (SDL_RWops *src, int freesrc)
16 	(void) biYPelsPerMeter;
17 	(void) biClrImportant;
18
19+        if (biWidth <= 0 || biHeight == 0) {
20+            SDL_SetError("BMP file with bad dimensions (%dx%d)", biWidth, biHeight);
21+            was_error = SDL_TRUE;
22+            goto done;
23+        }
24 	if (biHeight < 0) {
25 		topDown = SDL_TRUE;
26 		biHeight = -biHeight;
27--
282.25.1
29
30