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Bug #39380 php crashes in preg_match
Submitted: 2006-11-04 17:14 UTC Modified: 2006-12-01 21:29 UTC
From: corinl at gmx dot de Assigned: andrei (profile)
Status: Not a bug Package: PCRE related
PHP Version: 5.2.0 OS: linux debian
Private report: No CVE-ID: None
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From: corinl at gmx dot de
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 [2006-11-04 17:14 UTC] corinl at gmx dot de 
Description:
------------
running the reproduce code crashes php 5.1.6 and 5.2.0 with a segmentation fault.

--
(gdb) set args php_crash.php
(gdb) run
Starting program: /usr/bin/php php_crash.php
[Thread debugging using libthread_db enabled]
[New Thread -1486911808 (LWP 25359)]
ok1
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1486911808 (LWP 25359)]
0x080b167d in match (
    eptr=0xa73d1542 "t; schwierig<br />\r\n&gt;&lt; seltsam &gt;&lt; sensibel &gt;&lt; spontan &gt;&lt; stur &gt;&lt; t&auml;towiert &gt;&lt; treu &gt;&lt; unberechenbar <br />\r\n\r\n&gt;&lt; unentschlossen &gt;&lt;ungeduldig&"...,
    ecode=0x880b9a8 ";", offset_top=2, md=0xaf9e2620, ims=4, eptrb=0xaf1e8558,
    flags=2, rdepth=6454)
    at /usr/local/src/php-5.2.0/ext/pcre/pcrelib/pcre_exec.c:554
554     utf8 = md->utf8;       /* Local copy of the flag */
(gdb)


Reproduce code:
---------------
http://www.netskin.de/download/php_crash.php.txt

Expected result:
----------------
ok1
ok2


Actual result:
--------------
ok1
-> crashes before echo('ok2')

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 [2006-12-01 21:29 UTC] nlopess@php.net 
another stack overflow problem. you can use the new ini settings to prevent the segfault and/or increase the stack size.
 
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