Description
Integer signedness error in the _zend_mm_alloc_int function in the Zend Memory Manager in PHP 5.2.0 allows remote attackers to execute arbitrary code via a large emalloc request, related to an incorrect signed long cast, as demonstrated via the HTTP SOAP client in PHP, and via a call to msg_receive with the largest positive integer value of maxsize.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 5.0 | php5 | 5.2.0-10+lenny1 | DTSA-39-1 |
| Debian 4.0 | php5 | 5.2.0-8+etch3 | DSA-1283-1 |
Advisories 2
- DTSA-39-1 php5 - several vulnerabilities Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-1283-1 php5 Debian Security (DSA / DLA) · Mar 9, 2026
References
- 25056 third-party-advisory
- DSA-1283 vendor-advisory
- http://www.php-security.org/MOPB/MOPB-43-2007.html
- 23238 vdb-entry
- http://www.php-security.org/MOPB/MOPB-44-2007.html
- 25062 third-party-advisory
- zend-zendmmallocint-bo(33770) vdb-entry
- SUSE-SA:2007:032 vendor-advisory