Iphone 12 Pro Random Hangs and Restarts

Panic Log Hi Everyone,

I recently purchased my first ever Iphone i.e 12 pro 128gb . Battery Health is 88%. It was running IOS 16.4 well not encountered any issue after updating to IOS 16.5 it started acting weird. Suddenly Hangs Randomly and then restarts. I will share the actual log file. Its always the same error Panic Full {CPU 4 caller x.....} Undefined Kernel Instruction. Kindly Help me with this I'm Really disappointed can't even return / refund this phone as I bought it used. I'm a student and it was my 6 months collection which loss I can't bear. Any help will be appreciated.

Regards,

Tijaz