ID: 45580
Updated by: [EMAIL PROTECTED]
Reported By: victor dot stinner at haypocalc dot com
-Status: Open
+Status: Verified
Bug Type: Reproducible crash
Operating System: Linux
PHP Version: 5.2.6
New Comment:
Can not reproduce in PHP_5_3 branch, does crash in current PHP_5_2
branch.
Previous Comments:
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[2008-07-21 13:08:23] victor dot stinner at haypocalc dot com
Description:
------------
Using my fuzzer, I found a bug in levenshtein() function with random
arguments. The crash occurs in:
#0 0x08297319 in reference_levdist (s1=0x85486f8
"�3[W\217�W\221�",
l1=9, s2=0x2a <Address 0x2a out of bounds>, l2=2, cost_ins=42,
cost_rep=0, cost_del=42)
at /home/haypo/php-5.2.6/ext/standard/levenshtein.c:54
#1 0x08297bee in zif_levenshtein (ht=5, return_value=0x8548680,
return_value_ptr=0x0, this_ptr=0x0, return_value_used=0)
at /home/haypo/php-5.2.6/ext/standard/levenshtein.c:112
#2 0x083452b5 in zend_do_fcall_common_helper_SPEC
(execute_data=0xbfddb6a0)
at /home/haypo/php-5.2.6/Zend/zend_vm_execute.h:200
#3 0x0834ac85 in ZEND_DO_FCALL_SPEC_CONST_HANDLER
(execute_data=0xbfddb6a0)
at /home/haypo/php-5.2.6/Zend/zend_vm_execute.h:1679
#4 0x08344e05 in execute (op_array=0x85480b0)
at /home/haypo/php-5.2.6/Zend/zend_vm_execute.h:92
#5 0x0831fd69 in zend_execute_scripts (type=8, retval=0x0,
file_count=3) at /home/haypo/php-5.2.6/Zend/zend.c:1134
#6 0x082cb708 in php_execute_script (primary_file=0xbfddda20)
at /home/haypo/php-5.2.6/main/main.c:2005
The bug may comes from "s2=0x2a <Address 0x2a out of bounds>" error.
Reproduce code:
---------------
<?php
$a = 42;
levenshtein("test", &$a, &$a, null, &$a);
?>
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--
Edit this bug report at http://bugs.php.net/?id=45580&edit=1
