Integer overflow in the fread function in ext/standard/file.c in PHP before 5.5.36 and 5.6.x before 5.6.22 allows remote attackers to cause a denial of service or possibly have unspecified other impact via a large integer in the second argument. http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-5096
