Gentoo has issued an update for pecl-apc. This fixes a vulnerability, which can be exploited by malicious users to bypass certain security restrictions and potentially by malicious people to compromise a vulnerable system.

For more information:
SA29509

Solution
Update to "dev-php5/pecl-apc-3.0.16-r1" or later.
Original Advisory
http://www.gentoo.org/security/en/glsa/glsa-200804-07.xml

Other references
Further details available to Secunia VIM customers

Deep Links
Links available to Secunia VIM customers