Samsung galaxy s3 kernel version I just completely reset my phone.

When I checked the About Device section, it among other things shows:

Kernel version
3.0.31-2168382
se.infra@R0301-02 #1
Thu Nov 28 21:02:26 KST 2013


Is this normal or should I be worried that my phone has been hacked or something?
That's completely normal. What about it worried you?