Following the PS4 BadIRET PoC, today PlayStation 4 developer BigBoss tweeted that they have now achieved LibPS4/PS4Link/PS4SH PS4 PoC Dlclose root privilege escalation! :D
From GitHub:
debug.sh
[PS4][INFO]: ready to have a lot of fun...
[PS4][DEBUG]: [PS4LINK] Server payload thread UID...