#49738 [Opn->Fbk]: calling mcrypt after mcrypt_generic_deinit crashes

ID: 49738 Updated by: jani@php.net Reported By: terrafrost@php.net -Status: Open +Status: Feedback Bug Type: mcrypt related Operating System: Windows XP PHP Version: 5.2.11 New Comment: Thank you for this bug report. To properly diagnose the problem, we need a backtrace to see what is happening behind the scenes. To find out how to generate a backtrace, please read http://bugs.php.net/bugs-generating-backtrace.php for *NIX and http://bugs.php.net/bugs-generating-backtrace-win32.php for Win32 Once you have generated a backtrace, please submit it to this bug report and change the status back to "Open". Thank you for helping us make PHP better. Previous Comments: ------------------------------------------------------------------------ [2009-10-01 16:17:10] terrafrost@php.net Description: ------------ In bug # 41252, it was observed that, in PHP4, calling mcrypt_generic() before calling mcrypt_module_open() would cause PHP4 to crash. PHP5 apparently had extra checks to protect against this that were backported. These extra checks, however, do not appear to be sufficient, as the following reproduce code demonstrates. Sure, calling mcrypt_generic_deinit() before calling mcrypt_generic is probably not something you ought to be doing, anyway, but I still don't think it ought to crash PHP. Reproduce code: --------------- <?php $td = mcrypt_module_open(MCRYPT_DES, '', MCRYPT_MODE_ECB, ''); mcrypt_generic_init($td, 'aaaaaaaa', 'aaaaaaaa'); mcrypt_generic_deinit($td); echo mcrypt_generic($td, 'aaaaaaaa'); ?> Expected result: ---------------- Warning: mcrypt_generic(): Operation disallowed prior to mcrypt_generic_init() in {filename} on line 5 Actual result: -------------- It crashes. ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=49738&edit=1