The nfs_wait_on_request function in fs/nfs/pagelist.c in Linux kernel 2.6.x through 2.6.33-rc5 allows attackers to cause a denial of service (Oops) via unknown vectors related to truncating a file and an operation that is not interruptible.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10442
https://bugzilla.redhat.com/show_bug.cgi?id=567184
http://www.vupen.com/english/advisories/2010/1857
http://www.vmware.com/security/advisories/VMSA-2011-0003.html
http://www.securityfocus.com/bid/39569
http://www.securityfocus.com/archive/1/516397/100/0/threaded
http://www.openwall.com/lists/oss-security/2010/03/03/1
http://www.debian.org/security/2010/dsa-2053
http://secunia.com/advisories/43315
http://secunia.com/advisories/40645
http://secunia.com/advisories/39830
http://lists.opensuse.org/opensuse-security-announce/2010-07/msg00006.html