Here are updated packages in the Yum repository:

• PHP 5.6.5 for RHEL/CentOS 6/7 changelog
• PHP 5.5.21 for RHEL/CentOS 5/6/7 changelog
• PHP 5.4.37 for RHEL/CentOS 5/6/7 changelog

The PHP 5.6.4, 5.5.20 and 5.4.36 releases fixes 3 CVEs (along with other bug fixes):
* CVE-2014-9427
* CVE-2015-0231
* CVE-2015-0232