Linux Kernel 3.16.69 released
You didn't read the version number wrong, it's 3.16.69 like it's 1999. This new version of an ancient kernel fixes the TCP networking vulnerabilities that were made public this week. Those were considered to be serious enough to prompt a rare update for this very old kernel version.
The entire change-log consists of the TCP stack related patches that were introduced in the emergency release of the supported stable kernel branches as well as fix for ext4.
There is actually quite a lot of routers, servers and things like that running 3.1x kernels so an update to this old kernel is welcome. It is of course possible to disable SACK's with
echo 0 > /proc/sys/net/ipv4/tcp_sack and avoid the vulnerabilities.
published 2019-06-20 - last edited 2019-06-20