The __skb_flow_dissect function in net/core/flow_dissector.c in the Linux kernel before 4.3 does not ensure that n_proto, ip_proto, and thoff are initialized, which allows remote attackers to cause a denial of service (system crash) or possibly execute arbitrary code via a single crafted MPLS packet. http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-13715
CVE-2017-13715 Detail: https://nvd.nist.gov/vuln/detail/CVE-2017-13715 Vulnerable kernels: http://www.securityfocus.com/bid/100517
