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Merge branch 'PHP-7.2'

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* PHP-7.2:
  Fix #73957: signed integer conversion in imagescale()
This commit is contained in:
Christoph M. Becker 2018-03-10 00:26:25 +01:00
commit 4095f63a90
2 changed files with 21 additions and 1 deletions
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2
ext/gd/gd.c
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@ -4831,7 +4831,7 @@ PHP_FUNCTION(imagescale)
}
}
if (tmp_h <= 0 || tmp_w <= 0) {
if (tmp_h <= 0 || tmp_h > INT_MAX || tmp_w <= 0 || tmp_w > INT_MAX) {
RETURN_FALSE;
}

20
ext/gd/tests/bug73957.phpt Normal file
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@ -0,0 +1,20 @@
--TEST--
Bug #73957 (signed integer conversion in imagescale())
--SKIPIF--
<?php
if (!extension_loaded('gd')) die('skip gd extension not available');
if (PHP_INT_SIZE != 8) die('skip this test is for 64bit platforms only');
?>
--FILE--
<?php
$im = imagecreate(8, 8);
$im = imagescale($im, 0x100000001, 1);
var_dump($im);
if ($im) { // which is not supposed to happen
var_dump(imagesx($im));
}
?>
===DONE===
--EXPECT--
bool(false)
===DONE===