#38648 [NEW]: NULL pointer leads to core dump in "php_stream_bucket_unlink()"

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