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Fix imagecreatefromstring() continuing after the too long ValueError #25411

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lacatoire wants to merge 1 commit into from
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Fix imagecreatefromstring() continuing after the too long ValueError #25411

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1 change: 1 addition & 0 deletions ext/gd/gd.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1425,6 +1425,7 @@ PHP_FUNCTION(imagecreatefromstring)

if (ZSTR_LEN(data) > INT_MAX) {
zend_argument_value_error(1, "is too long");
RETURN_THROWS();
}

imtype = _php_image_type(data);
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24 changes: 24 additions & 0 deletions ext/gd/tests/imagecreatefromstring_too_long.phpt
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Original file line number Diff line number Diff line change
@@ -0,0 +1,24 @@
--TEST--
imagecreatefromstring(): a string longer than INT_MAX throws without decoding it
--EXTENSIONS--
gd
--SKIPIF--
<?php
if (PHP_INT_SIZE != 8) die('skip 64-bit only');
if (getenv("SKIP_SLOW_TESTS")) die('skip slow test');
?>
--INI--
memory_limit=-1
--FILE--
<?php
$s = str_repeat("x", 2147483648);
try {
imagecreatefromstring($s);
} catch (ValueError $e) {
echo $e->getMessage(), "\n";
}
echo "Done\n";
?>
--EXPECT--
imagecreatefromstring(): Argument #1 ($data) is too long
Done
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