Integer overflow in the sg_start_req function in drivers/scsi/sg.c in the Linux kernel 2.6.x through 4.x before 4.1 allows local users to cause a denial of service or possibly have unspecified other impact via a large iov_count value in a write request. http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2015-5707
