#49390 [NEW]: SEGV with zval_ptr_dtor
From: aya at eh dot org
Operating system: Linux
PHP version: 5.3.0
PHP Bug Type: Reproducible crash
Bug description: SEGV with zval_ptr_dtor
Description:
------------
It seems that zval_ptr_dtor doesn't check if strings are heap-allocated.
Reproduce code:
---------------
// Change this to zero to get a SEGV
int heapAllocate = 1;
// Make a string zval
zval* v;
MAKE_STD_ZVAL(v);
ZVAL_STRING(v, "foo", heapAllocate);
// SEGV happens here
zval_ptr_dtor(&v);
Expected result:
----------------
Nothing.
Actual result:
--------------
php-5.3.0/Zend/zend_execute_API.c(435) : Block 0x004014fa status:
php-5.3.0/Zend/zend_variables.c(36) : Actual location (location was
relayed)
Invalid pointer: ((thread_id=0x74706972) != (expected=0x96F6B8A0))
--
Edit bug report at http://bugs.php.net/?id=49390&edit=1
--
Try a snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=49390&r=trysnapshot52
Try a snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=49390&r=trysnapshot53
Try a snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=49390&r=trysnapshot60
Fixed in SVN: http://bugs.php.net/fix.php?id=49390&r=fixed
Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=49390&r=needdocs
Fixed in release: http://bugs.php.net/fix.php?id=49390&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=49390&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=49390&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=49390&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=49390&r=support
Expected behavior: http://bugs.php.net/fix.php?id=49390&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=49390&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=49390&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=49390&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=49390&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=49390&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=49390&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=49390&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=49390&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=49390&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=49390&r=mysqlcfg
Thread (2 messages)
- aya at eh dot org