The cap_bprm_set_creds function in security/commoncap.c in the Linux kernel before 3.3.3 does not properly handle the use of file system capabilities (aka fcaps) for implementing a privileged executable file, which allows local users to bypass intended personality restrictions via a crafted application, as demonstrated by an attack that uses a parent process to disable ASLR.
http://rhn.redhat.com/errata/RHSA-2012-0670.html
http://rhn.redhat.com/errata/RHSA-2012-0743.html
https://bugzilla.redhat.com/show_bug.cgi?id=806722
https://exchange.xforce.ibmcloud.com/vulnerabilities/75043
https://github.com/torvalds/linux/commit/d52fc5dde171f030170a6cb78034d166b13c9445
http://www.debian.org/security/2012/dsa-2469
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.3.3