From 1ccfe21e14c4d18336f9da8515cd17db88c3de61 Mon Sep 17 00:00:00 2001
From: Pierre Joye <pierre.php@gmail.com>
Date: Mon, 27 Jun 2016 11:17:39 +0700
Subject: [PATCH 1/5] fix php 72494, invalid color index not handled, can lead
 to crash

--- libgd2.orig/src/gd_crop.c
+++ libgd2/src/gd_crop.c
@@ -136,6 +136,10 @@ BGD_DECLARE(gdImagePtr) gdImageCropThres
 		return NULL;
 	}
 
+	if (color < 0 || (!gdImageTrueColor(im) && color >= gdImageColorsTotal(im))) {
+		return NULL;
+	}
+
 	/* TODO: Add gdImageGetRowPtr and works with ptr at the row level
 	 * for the true color and palette images
 	 * new formats will simply work with ptr