The Slackware linux development group has released a new package for PHP4-using users of their distribution today:

New php-4.4.8 packages are available for Slackware 10.2 and 11.0 to fix security issues. More details about the issues may be found here: http://bugs.php.net/43010.

You can download it from their FTP sites, two versions for each of the most recent distributions: Slackware 10.2 and Slackware 11.0