[CVE A/T] CVE-2018-1130 -- dccp oops

[Andy Whitcroft]

CVE-2018-1130
    It was discovered that a null pointer dereference vulnerability
    existed in the DCCP protocol implementation in the Linux kernel. A
    local attacker could use this to cause a denial of service (system
    crash).

Following this email are patches for artful and trusty, they are both
clean cherry-picks but differ in context.

Proposing for SRU to artful/linux and trusty/linux.

-apw