Note that I didn't say it was impossible to port a BSD exploit to it, I just said that it was harder. I don't know the specific version of FreeBSD/NetBSD that P

Note that I didn't say it was impossible to port a BSD exploit to it, I just said that it was harder. I don't know the specific version of FreeBSD/NetBSD that PS4 uses, but lets say it is FreeBSD 9. I am sure that not all CVEs in FreeBSD 9 are portable to PS4, and even when it does work it will need additional some additional work because of the differences between PS4 kernel and vanilla *BSD. Another observation: if PS4 used Linux, Sony would be forced to open the modified PS4's Linux kernel thanks to GPL License, and would be trivial to check for security exploits since you have the source code.