blucaz

That's not an exploit, that's just a sequence of basic misunderstandings about how things work on Linux. Which would be fine, nobody knows everything, if they weren't coated with grand claims and not-so-veiled personal abuse.

The only thing this demonstrates is that the OP has just learned about how uid-based privilege boundaries work on Linux. Nothing wrong with learning new things for the first time of course, but it would be best to avoid making grand claims in the process.