After a very busy cycle due to the Meltdown and Spectre security vulnerabilities, which were publicly disclosed earlier this year and later discovered to put billions of devices using modern processors at risk of attacks, the Linux 4.15 kernel series was released at the of January heavily redesign against two critical hardware bugs. Now, nearly three months and only eighteen maintenance updates later, the Linux 4.15 kernel series reached end of life and it will no longer receive support. As such, all those using a kernel from the Linux 4.15 branch on their GNU/Linux distributions are urged to upgrade to the latest Linux 4.16 kernel series as soon as possible.