From: Cristy <urban-warrior@imagemagick.org>
Date: Sun, 21 Jan 2018 16:16:14 +0000 (-0500)
Subject: Don't overflow pixel buffer
X-Git-Tag: 7.0.7-22~14
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=147814adf1c657f647ee7e73027dbedde5ac2467;p=imagemagick

Don't overflow pixel buffer
Credit OSS-FUZZ
---

diff --git a/coders/dds.c b/coders/dds.c
index e3778fd61..85e33a591 100644
--- a/coders/dds.c
+++ b/coders/dds.c
@@ -2113,7 +2113,7 @@ static MagickBooleanType ReadDXT3Pixels(Image *image,
       {
         for (i = 0; i < 4; i++)
         {
-          if ((x + i) < (ssize_t) image->rows && (y + j) < (ssize_t) image->columns)
+          if ((x + i) < (ssize_t) image->columns && (y + j) < (ssize_t) image->rows)
             {
               code = (bits >> ((4*j+i)*2)) & 0x3;
               SetPixelRed(image,ScaleCharToQuantum(colors.r[code]),q);