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Bug #71371 Segfault using PDO::query() or PDO::execute()
Submitted: 2016-01-14 17:25 UTC Modified: 2020-10-11 04:22 UTC
Votes:3
Avg. Score:4.3 ± 0.9
Reproduced:3 of 3 (100.0%)
Same Version:1 (33.3%)
Same OS:0 (0.0%)
From: me at mattbutterworth dot co dot uk Assigned: cmb (profile)
Status: No Feedback Package: PDO ODBC
PHP Version: 5.6.17 OS: CentOS 6
Private report: No CVE-ID: None
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 [2016-01-14 17:25 UTC] me at mattbutterworth dot co dot uk 
Description:
------------
We are running into a segfault when trying to use PDO ODBC.

PHP version info:


PHP 5.6.16 (cli) (built: Dec  2 2015 10:11:22)
Copyright (c) 1997-2015 The PHP Group
Zend Engine v2.6.0, Copyright (c) 1998-2015 Zend Technologies
    with the ionCube PHP Loader (enabled) + Intrusion Protection from ioncube24.com (unconfigured) v5.0.18, Copyright (c) 2002-2015, by ionCube Ltd.
    with Zend OPcache v7.0.4-dev, Copyright (c) 1999-2015, by Zend Technologies
    with Zend Guard Loader v3.3, Copyright (c) 1998-2014, by Zend Technologies


php test.php


Segmentation fault

BT Provided below.



Test script:
---------------
$dsn = 'odbc:driver=SQLServer;database=***;server=***.***.***.***;port=1433';
$user = '*****';
$password = '****';

try {
	$dbh = new \PDO($dsn, $user, $password);
	$dbh->setAttribute(\PDO::ATTR_ERRMODE, \PDO::ERRMODE_EXCEPTION);
} catch (\PDOException $e) {
	echo 'Connection Failed' . $e->getMessage();
}
// Connection , no exceptions

$sql = "SELECT * FROM mytable";
$dsn->query($sql);

Expected result:
----------------
GDB:

Program received signal SIGSEGV, Segmentation fault.
0x00002aaab260b02b in ?? () from /opt/alt/php56/usr/lib64/php/modules/pdo.so
(gdb) bt
#0  0x00002aaab260b02b in ?? () from /opt/alt/php56/usr/lib64/php/modules/pdo.so
#1  0x00000000006867aa in ?? ()
#2  0x00000000006bdcd8 in execute_ex ()
#3  0x00002aaaac1eaf6c in zend_oe () from /opt/alt/php56/usr/lib64/php/modules/ZendGuardLoader.so
#4  0x000000000064fc6a in zend_execute_scripts ()
#5  0x00000000005f130b in php_execute_script ()
#6  0x00000000006f36bd in ?? ()
#7  0x00000000006f4058 in ?? ()
#8  0x0000003ed141d9f4 in __libc_start_main () from /lib64/libc.so.6
#9  0x00000000004264b9 in _start ()



Actual result:
--------------
GDB:

Program received signal SIGSEGV, Segmentation fault.
0x00002aaab260b02b in ?? () from /opt/alt/php56/usr/lib64/php/modules/pdo.so
(gdb) bt
#0  0x00002aaab260b02b in ?? () from /opt/alt/php56/usr/lib64/php/modules/pdo.so
#1  0x00000000006867aa in ?? ()
#2  0x00000000006bdcd8 in execute_ex ()
#3  0x00002aaaac1eaf6c in zend_oe () from /opt/alt/php56/usr/lib64/php/modules/ZendGuardLoader.so
#4  0x000000000064fc6a in zend_execute_scripts ()
#5  0x00000000005f130b in php_execute_script ()
#6  0x00000000006f36bd in ?? ()
#7  0x00000000006f4058 in ?? ()
#8  0x0000003ed141d9f4 in __libc_start_main () from /lib64/libc.so.6
#9  0x00000000004264b9 in _start ()

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 [2020-09-28 15:45 UTC] cmb@php.net
-Status: Open +Status: Feedback -Assigned To: +Assigned To: cmb
 [2020-09-28 15:45 UTC] cmb@php.net 
Do you still get the segfault with any of the actively supported
PHP versions[1]?

[1] <https://www.php.net/supported-versions.php>
 [2020-10-11 04:22 UTC] php-bugs at lists dot php dot net 
No feedback was provided. The bug is being suspended because
we assume that you are no longer experiencing the problem.
If this is not the case and you are able to provide the
information that was requested earlier, please do so and
change the status of the bug back to "Re-Opened". Thank you.
 
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