From: php at benjaminschulz dot com
Operating system:
PHP version: 5.2CVS-2007-10-19 (CVS)
PHP Bug Type: PCRE related
Bug description: preg_match() segfaults on large strings
Description:
------------
See the Code
Reproduce code:
---------------
<?php
$string = str_repeat("foobarbazbang", 2000);
var_dump(
preg_match('/^([\x00-\x7f]|'.
'[\xc2-\xdf][\x80-\xbf]|' .
'\xe0[\xa0-\xbf][\x80-\xbf]|' .
'[\xe1-\xec][\x80-\xbf]{2}|' .
'\xed[\x80-\x9f][\x80-\xbf]|' .
'[\xee-\xef][\x80-\xbf]{2}|' .
'f0[\x90-\xbf][\x80-\xbf]{2}|' .
'[\xf1-\xf3][\x80-\xbf]{3}|' .
'\xf4[\x80-\x8f][\x80-\xbf]{2})*$/',
$string)
);
Actual result:
--------------
Backtrace:
[New Thread -1216595648 (LWP 25629)]
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1216595648 (LWP 25629)]
0x080b7876 in match (
eptr=0x87af93c
"oobarbazbangfoobarbazbangfoobarbazbangfoobarbazbangfoobarbazbangfoobarbazbangfoobarbazbangfoobarbazbangfoobarbazbangfoobarbazbangfoobarbazbangfoobarbazbangfoobarbazbangfoobarbazbangfoobarbazbangfoobar"...,
ecode=0x87e14c5 "^", mstart=0x87aeeec
"foobarbazbangfoobarbazbangfoobarbazbangfoobarbazbangfoobarbazbangfoobarbazbangfoobarbazbangfoobarbazbangfoobarbazbangfoobarbazbangfoobarbazbangfoobarbazbangfoobarbazbangfoobarbazbangfoobarbazbangfooba"...,
offset_top=4, md=0xbffbf8ec, ims=0, eptrb=0x0, flags=0, rdepth=5281)
at /usr/src/php5/ext/pcre/pcrelib/pcre_exec.c:575575 utf8 = md->utf8;
/* Local copy of the flag */
--
Edit bug report at http://bugs.php.net/?id=43031&edit=1
--
Try a CVS snapshot (PHP 4.4):
http://bugs.php.net/fix.php?id=43031&r=trysnapshot44
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=43031&r=trysnapshot52
Try a CVS snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=43031&r=trysnapshot53
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=43031&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=43031&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=43031&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=43031&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=43031&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=43031&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=43031&r=support
Expected behavior: http://bugs.php.net/fix.php?id=43031&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=43031&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=43031&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=43031&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=43031&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=43031&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=43031&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=43031&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=43031&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=43031&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=43031&r=mysqlcfg
