utils/opcontrol in OProfile 0.9.6 and earlier might allow local users to conduct eval injection attacks and gain privileges via shell metacharacters in the -e argument.
http://www.ubuntu.com/usn/USN-1166-1
http://www.debian.org/security/2011/dsa-2254
http://secunia.com/advisories/45205
http://secunia.com/advisories/44790
http://openwall.com/lists/oss-security/2011/05/11/1