The cache manager in the client in OpenAFS 1.0 through 1.4.8 and 1.5.0 through 1.5.58, and IBM AFS 3.6 before Patch 19, on Linux allows remote attackers to cause a denial of service (system crash) via an RX response with a large error-code value that is interpreted as a pointer and dereferenced, related to use of the ERR_PTR macro.
http://www.vupen.com/english/advisories/2011/0117
http://www.vupen.com/english/advisories/2009/0984
http://www.securityfocus.com/bid/34404
http://www.openafs.org/security/OPENAFS-SA-2009-002.txt
http://www.mandriva.com/security/advisories?name=MDVSA-2009:099
http://www.debian.org/security/2009/dsa-1768
http://www-1.ibm.com/support/docview.wss?uid=swg1ID71123
http://www-01.ibm.com/support/docview.wss?uid=swg21396389
http://security.gentoo.org/glsa/glsa-201101-05.xml
http://secunia.com/advisories/42896
http://secunia.com/advisories/36310