Bug #63159 [NEW]: Passing > 1 additional module to php_module_startup causes a segfault

From: Date: Tue, 25 Sep 2012 02:06:44 +0000
Subject: Bug #63159 [NEW]: Passing > 1 additional module to php_module_startup causes a segfault
Groups: php.bugs 
Request: Send a blank email to php-bugs+get-173689@lists.php.net to get a copy of this message 
From:             slangley at google dot com
Operating system: N/A
PHP version:      5.4.7
Package:          Reproducible crash
Bug Type:         Bug
Bug description:Passing > 1 additional module to php_module_startup causes a segfault 

Description:
------------
This was reported in 2004 but seemingly never fixed?

http://marc.info/?l=php-internals&m=110257814320454&w=2

php_module_startup expects a pointer to an array of structures of 
zend_module_entry. This gets passed to php_register_extensions which
expects an 
array of points to structures of zend_module_entry. php_register_extensions
then 
tries to use pointer arithmetic to walk along the passed array, which will
cause a 
seg fault.

I will make a pull request on github with this fix.

Test script:
---------------
Write a SAPI, pass > 2 additional modules to php_module_startup.


-- 
Edit bug report at https://bugs.php.net/bug.php?id=63159&edit=1
-- 
Try a snapshot (PHP 5.4):   https://bugs.php.net/fix.php?id=63159&r=trysnapshot54
Try a snapshot (PHP 5.3):   https://bugs.php.net/fix.php?id=63159&r=trysnapshot53
Try a snapshot (trunk):     https://bugs.php.net/fix.php?id=63159&r=trysnapshottrunk
Fixed in SVN:               https://bugs.php.net/fix.php?id=63159&r=fixed
Fixed in release:           https://bugs.php.net/fix.php?id=63159&r=alreadyfixed
Need backtrace:             https://bugs.php.net/fix.php?id=63159&r=needtrace
Need Reproduce Script:      https://bugs.php.net/fix.php?id=63159&r=needscript
Try newer version:          https://bugs.php.net/fix.php?id=63159&r=oldversion
Not developer issue:        https://bugs.php.net/fix.php?id=63159&r=support
Expected behavior:          https://bugs.php.net/fix.php?id=63159&r=notwrong
Not enough info:            https://bugs.php.net/fix.php?id=63159&r=notenoughinfo
Submitted twice:            https://bugs.php.net/fix.php?id=63159&r=submittedtwice
register_globals:           https://bugs.php.net/fix.php?id=63159&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=63159&r=php4
Daylight Savings:           https://bugs.php.net/fix.php?id=63159&r=dst
IIS Stability:              https://bugs.php.net/fix.php?id=63159&r=isapi
Install GNU Sed:            https://bugs.php.net/fix.php?id=63159&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=63159&r=float
No Zend Extensions:         https://bugs.php.net/fix.php?id=63159&r=nozend
MySQL Configuration Error:  https://bugs.php.net/fix.php?id=63159&r=mysqlcfg

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