5.7.19 out now
https://dl.ubnt.com/unifi/5.7.19-84cd139873/unifi_sysvinit_all.deb
https://community.ubnt.com/t5/UniFi-Beta-Blog/UniFi-5-7-19-Stable-Candidate-has-been-released/ba-p/2244531
UniFi 5.7.18 Stable Candidate has been released
https://community.ubnt.com/t5/UniFi-Beta-Blog/UniFi-5-7-18-Stable-Candidate-has-been-released/ba-p/2238507
Kernel 4.14.18
https://lkml.org/lkml/2018/2/7/704
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.18
Has ALOT of clean up and fixes for meltdown and spectre.
FYI