Ubuntu is a very popular Linux distribution for servers, clouds, and the desktop. So, when parent company Canonical announces it is moving Ubuntu 18.04, the latest long term support (LTS) edition, to a new Linux kernel, it’s time to pay attention and patch.
This kernel, 4.15.0-44.47, contains 11 security fixes and other minor improvements.
The most significant of these are four problems with Linux’s implementation of the ext4 filesystem. Ext4 is the most commonly used Linux filesystem, and it’s the Ubuntu Linux family’s default file system.
