Php · Php · CVE-2014-9425
**Name of the Vulnerable Software and Affected Versions**
PHP versions prior to 5.5.21
PHP versions 5.6.x through 5.6.4
**Description**
The issue is related to a double free vulnerability in the `zend ts hash graceful destroy` function, which can be exploited by remote attackers to cause a denial of service or possibly have other unspecified impacts.
**Recommendations**
For PHP versions prior to 5.5.21, update to version 5.5.21 or later.
For PHP versions 5.6.x through 5.6.4, update to version 5.6.5 or later.