In details slides explaining exploitation of binder kernel use-after-free (UAF) vulnerability in the Android kernel (CVE-2022-20421) to achieves full kernel R/W
Affected devices: devices running Kernel version 5.4.x and 5.10.x

Slides: https://0xkol.github.io/assets/files/OffensiveCon23_Racing_Against_the_Lock__Exploiting_Spinlock_UAF_in_the_Android_Kernel.pdf
Research: https://0xkol.github.io/assets/files/Racing_Against_the_Lock__Exploiting_Spinlock_UAF_in_the_Android_Kernel.pdf
PoC: https://github.com/0xkol/badspin