Integer signedness error in the CIFSFindNext function in fs/cifs/cifssmb.c in the Linux kernel before 3.1 allows remote CIFS servers to cause a denial of service (memory corruption) or possibly have unspecified other impact via a large length value in a response to a read request for a directory.
https://github.com/torvalds/linux/commit/9438fabb73eb48055b58b89fc51e0bc4db22fabd
https://bugzilla.redhat.com/show_bug.cgi?id=732869
http://www.openwall.com/lists/oss-security/2011/08/24/2