- MFB: fix crash when some crafted font are given

1 files changed, 25 insertions, 0 deletions

diff --git a/ext/gd/tests/imageloadfont_invalid.phpt b/ext/gd/tests/imageloadfont_invalid.phpt
new file mode 100644
index 0000000000..b297ac73e2
--- /dev/null
+++ b/ext/gd/tests/imageloadfont_invalid.phpt
@@ -0,0 +1,25 @@
+--TEST--
+imageloadfont() function crashes
+--SKIPIF--
+<?php 
+	if (!extension_loaded('gd')) die("skip gd extension not available\n"); 
+	if (!GD_BUNDLED) die('skip external GD libraries always fail');
+?>
+--FILE--
+<?php
+$filename = dirname(__FILE__) .  '/font.gdf';
+$bin = "\x41\x41\x41\x41\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x01\x00";
+$fp = fopen($filename, 'wb');
+fwrite($fp, $bin);
+fclose($fp);
+
+$image = imagecreatetruecolor(50, 20);
+$font = imageloadfont($filename);
+$black = imagecolorallocate($image, 0, 0, 0);
+imagestring($image, $font, 0, 0, "Hello", $black);
+?>
+--EXPECTF--
+Warning: imageloadfont(): gd warning: product of memory allocation multiplication would exceed INT_MAX, failing operation gracefully
+ in %simageloadfont_invalid.php on line %d
+
+Warning: imageloadfont(): Error reading font, invalid font header in %simageloadfont_invalid.php on line %d