In Open vSwitch (OvS) 2.7.0, while parsing an OpenFlow role status message, there is a call to the abort() function for undefined role status reasons in the function `ofp_print_role_status_message` in `lib/ofp-print.c` that may be leveraged toward a remote DoS attack by a malicious switch.
https://mail.openvswitch.org/pipermail/ovs-dev/2017-May/332966.html
https://access.redhat.com/errata/RHSA-2017:2727
https://access.redhat.com/errata/RHSA-2017:2698
https://access.redhat.com/errata/RHSA-2017:2692
https://access.redhat.com/errata/RHSA-2017:2665
https://access.redhat.com/errata/RHSA-2017:2648