fs/nfs/client.c in the Linux kernel before 2.6.23 does not properly initialize a certain structure member that stores the maximum NFS filename length, which allows local users to cause a denial of service (OOPS) via a long filename, related to the encode_lookup function.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8495
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10859
https://bugzilla.redhat.com/show_bug.cgi?id=494074
http://www.vupen.com/english/advisories/2009/3316
http://www.vmware.com/security/advisories/VMSA-2009-0016.html
http://www.ubuntu.com/usn/usn-793-1
http://www.securitytracker.com/id?1022176
http://www.securityfocus.com/bid/34390
http://www.securityfocus.com/archive/1/507985/100/0/threaded
http://www.redhat.com/support/errata/RHSA-2009-1077.html
http://www.redhat.com/support/errata/RHSA-2009-1024.html
http://www.openwall.com/lists/oss-security/2009/04/17/2
http://www.openwall.com/lists/oss-security/2009/04/06/1
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.23
http://www.debian.org/security/2009/dsa-1794
http://secunia.com/advisories/37471
http://secunia.com/advisories/35656
http://secunia.com/advisories/35324
http://secunia.com/advisories/35160
http://secunia.com/advisories/35015
http://secunia.com/advisories/35011