Enthusiasts were able to successfully boot the kernel Linux 5.18 on Apple iPad tablets built on ARM A7 and A8 chips. Currently, work is limited to adaptation Linux for iPad Air, iPad Air 2 and some iPad mini devices, but there are no fundamental problems with applying the developments to other devices on Apple A7 and A8 chips, such as iPhone 5S and HomePod, released in 2013-2014. For newer devices, you can use builds from the Sandcastle project.
The Checkm8 vulnerability is used to unlock the bootloader and bypass firmware verification (jailbreak). The current development stage supports kernel boot, graphics acceleration, networking, and sound, but USB and Bluetooth are not yet supported. The next goal of the project is to enable booting of a user environment based on the postmarketOS distribution, built on the Alpine package base. Linux, the standard C library Musl and the BusyBox utility suite.
Source: opennet.ru
