The dccp_disconnect function in net/dccp/proto.c in the Linux kernel through 4.14.3 allows local users to gain privileges or cause a denial of service (use-after-free) via an AF_UNSPEC connect system call during the DCCP_LISTEN state.
lists.opensuse.org/opensuse-security-announce/2018-01/msg00007.html
lists.openwall.net/netdev/2017/12/04/224
www.openwall.com/lists/oss-security/2017/12/05/1
www.securityfocus.com/bid/102056
access.redhat.com/errata/RHSA-2018:0399
access.redhat.com/errata/RHSA-2018:0676
access.redhat.com/errata/RHSA-2018:1062
access.redhat.com/errata/RHSA-2018:1130
access.redhat.com/errata/RHSA-2018:1170
access.redhat.com/errata/RHSA-2018:1216
access.redhat.com/errata/RHSA-2018:1319
access.redhat.com/errata/RHSA-2018:3822
help.ecostruxureit.com/display/public/UADCE725/Security+fixes+in+StruxureWare+Data+Center+Expert+v7.6.0
lists.debian.org/debian-lts-announce/2017/12/msg00004.html
usn.ubuntu.com/3581-1/
usn.ubuntu.com/3581-2/
usn.ubuntu.com/3581-3/
usn.ubuntu.com/3582-1/
usn.ubuntu.com/3582-2/
usn.ubuntu.com/3583-1/
usn.ubuntu.com/3583-2/
www.debian.org/security/2017/dsa-4073
www.debian.org/security/2018/dsa-4082
www.exploit-db.com/exploits/43234/