According to this new advisory from Secunia today, the SuSE linux group has released a new package update for the PHP4 distribution on their operating system:

SUSE has issued an update for php4. This fixes some vulnerabilities and a weakness, where one has an unknown impact and the others can be exploited by malicious, local users to gain escalated privileges, and by malicious, local users and malicious people to bypass certain security restrictions.

The issue is marked as "Less critical" but it's still a good idea to update, especially when it relates to security issues. You can find more information at the original advisory on the Novell site.