The HFS and HFS+ (hfsplus) modules in Linux 2.6 allow attackers to cause a denial of service (oops) by using hfsplus to mount a filesystem that is not hfsplus.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10777
http://www.ubuntu.com/usn/usn-199-1
http://www.securityfocus.com/bid/15049
http://www.securityfocus.com/archive/1/427980/100/0/threaded
http://www.redhat.com/support/errata/RHSA-2006-0101.html
http://www.debian.org/security/2005/dsa-922
http://secunia.com/advisories/18510