From: songmaqd at hotmail dot com
Operating system: UNIX
PHP version: 5CVS-2006-08-30 (CVS)
PHP Bug Type: Streams related
Bug description: NULL pointer leads to core dump in
"php_stream_bucket_unlink()"
Description:
------------
In source file "main/streams/filter.c", function "PHPAPI void
php_stream_bucket_unlink(php_stream_bucket *bucket TSRMLS_DC)
" needs some additional sanity check for NULL pointer of "brigade".
Otherwise it leads to core dump if "brigade" is NULL.
A possible example for this fix is:
PHPAPI void php_stream_bucket_unlink(php_stream_bucket *bucket TSRMLS_DC)
{
if (bucket->prev) {
bucket->prev->next = bucket->next;
} else if (bucket->brigade) /*newly added*/{
bucket->brigade->head = bucket->next;
}
if (bucket->next) {
bucket->next->prev = bucket->prev;
} else if (bucket->brigade) /*newly added*/{
bucket->brigade->tail = bucket->prev;
}
bucket->brigade = NULL;
bucket->next = bucket->prev = NULL;
}
--
Edit bug report at http://bugs.php.net/?id=38648&edit=1
--
Try a CVS snapshot (PHP 4.4):
http://bugs.php.net/fix.php?id=38648&r=trysnapshot44
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=38648&r=trysnapshot52
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=38648&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=38648&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=38648&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=38648&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=38648&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=38648&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=38648&r=support
Expected behavior: http://bugs.php.net/fix.php?id=38648&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=38648&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=38648&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=38648&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=38648&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=38648&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=38648&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=38648&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=38648&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=38648&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=38648&r=mysqlcfg
