The website and related infrastructure, which is operated by the Linux Kernel Organization,[1] host the repositories that make all versions of the kernel's source code available to all users.

[2][3] Since August 2014, kernel.org provides additional security by mandating two-factor authentication for commits performed to hosted Git repositories that contain source code of the Linux kernel, with support for both soft tokens and hard tokens.

Intruders had gained root access to the system and added a trojan to the startup scripts.

[8] All that makes kernel.org not the primary repository, but rather a distribution point of the kernel sources.

Kernel.org was back online by November 2011, with the exception of a few secondary services.