[php-src] Issue #14807: Signed integer overflow in ext/standard/levenshtein.c
| From: | YuanchengJiang | Date: | Thu, 04 Jul 2024 03:20:50 +0000 |
| Subject: | [php-src] Issue #14807: Signed integer overflow in ext/standard/levenshtein.c | ||
| Groups: | php.bugs | ||
| Request: | Send a blank email to php-bugs+get-247222@lists.php.net to get a copy of this message | ||
Issue: https://github.com/php/php-src/issues/14807
Author: YuanchengJiang
### Description
The following code:
```php
<?php
$a = PHP_INT_MIN;
levenshtein($a,$a,$a,$a,$a);
```
Resulted in this output:
```
/php-src/ext/standard/levenshtein.c:54:20: runtime error: signed integer overflow:
-9223372036854775808 + -9223372036854775808 cannot be represented in type 'long'
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior /php-src/ext/standard/levenshtein.c:54:20
```
### PHP Version
PHP 8.4.0-dev
### Operating System
ubuntu 22.04