cvs: gd /libgd gd_gif_in.c

pajoye		Fri Jun  8 05:23:38 2007 UTC

  Modified files:              
    /gd/libgd	gd_gif_in.c 
  Log:
  - #87, MFB: fix segfault when an invalid color index is present in the
    image data
  
  
http://cvs.php.net/viewvc.cgi/gd/libgd/gd_gif_in.c?r1=1.8&r2=1.9&diff_format=u
Index: gd/libgd/gd_gif_in.c
diff -u gd/libgd/gd_gif_in.c:1.8 gd/libgd/gd_gif_in.c:1.9
--- gd/libgd/gd_gif_in.c:1.8	Sun May  6 19:53:05 2007
+++ gd/libgd/gd_gif_in.c	Fri Jun  8 05:23:38 2007
@@ -564,6 +564,10 @@
        /*} */
 
        while ((v = LWZReadByte(fd, &sd, FALSE, c, ZeroDataBlockP)) >= 0 ) {
+               if (v >= gdMaxColors) {
+                       v = 0;
+               }
+
                /* This how we recognize which colors are actually used. */
                if (im->open[v]) {
                        im->open[v] = 0;