Buffer overflow in the __nfs4_get_acl_uncached function in fs/nfs/nfs4proc.c in the Linux kernel before 3.7.2 allows local users to cause a denial of service (memory corruption and system crash) or possibly have unspecified other impact via a getxattr system call for the system.nfs4_acl extended attribute of a pathname on an NFSv4 filesystem.
https://bugzilla.redhat.com/show_bug.cgi?id=1031678
http://www.securityfocus.com/bid/63791
http://www.openwall.com/lists/oss-security/2013/11/18/2
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.7.2
http://rhn.redhat.com/errata/RHSA-2014-0284.html