Criticism of Linux

The criticism of Linux focuses on issues concerning use of operating systems which use the Linux kernel.

While the Linux-based Android operating system dominates the smartphone market in many countries, and Linux is used on the New York Stock Exchange and most supercomputers, it is used in few desktop and laptop computers. Much of the criticism of Linux is related to the lack of desktop and laptop adoption, although as of 2015 there has been growing unease with the project's perspective on security and its adoption of systemd has been controversial.

Linux Kernel criticisms

Kernel development politics

A group of security patches for the Linux kernel, called grsecurity, have been proposed to add features like address space layout randomization into the official release of the kernel. Some security professionals say that the rise in prominence of operating system-level virtualization using Linux has raised the profile of attacks against the kernel, and that Linus Torvalds is reticent to add mitigations against kernel-level attacks in official releases.