The arch_get_unmapped_area function in mmap.c in the PaX patches for Linux kernel 2.6, when Address Space Layout Randomization (ASLR) is enabled, allows local users to cause a denial of service (infinite loop) via unknown attack vectors.
https://exchange.xforce.ibmcloud.com/vulnerabilities/16037
http://security.gentoo.org/glsa/glsa-200407-02.xml