From last month’s CVE, excerpt from XDA-Developers.com page:
[…]Moreover, Android Verified Boot 2.0 may kick in and brick your phone if you try to make permanent changes to protected partitions such as boot, system, and vendor without an unlocked bootloader. That being said, the exploit is currently available in its compiled form, while the developer will soon release the source code.[…]
https://github.com/bluefrostsecurity/CVE-2020-0041
https://labs.bluefrostsecurity.de/blog/2020/04/08/cve-2020-0041-part-2-escalating-to-root/
https://source.android.com/security/bulletin/2020-03-01
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-0041
LG V50 ThinQ gets root on locked bootloader thanks to an exploit
Firmware Security 