Buffer overflow in certain client utilities in OpenAFS before 1.6.2 allows remote authenticated users to cause a denial of service (crash) and possibly execute arbitrary code via a long fileserver ACL entry.
http://secunia.com/advisories/52342
http://secunia.com/advisories/52480
http://www.debian.org/security/2013/dsa-2638
http://www.mandriva.com/security/advisories?name=MDVSA-2014:244
http://www.openafs.org/pages/security/OPENAFS-SA-2013-001.txt