Linux kernel is in the process of replacing the HTTP links in its source code with HTTPS links. HTTPS is considered more secure than HTTP and can prevent lots of attacks like Man-In-The-Middle attack.
Currently there are more than 150 patches submitted by Linux Kernel developers to replace these HTTP links.
One thing to be noted is this replacement process is not a manual search and replace process. Indeed, some scripts are created to find out these links and try to find whether there is corresponding HTTPS link available and then do the replacement only if the HTTPS link works.
There are also lots of tests being done by the team to ensure that the links are not broken once the replacement is done. These changes are expected to be released in Linux Kernel 5.9.
