The search for is a symptom of a larger problem: high demand for regional content but low awareness of legal sources. The good news is that a legitimate Tamil dubbed version does exist—it was released theatrically in 2015 and has appeared on various OTT platforms since. However, no "patched" version is official.
You can find the movie with Tamil, Hindi, Telugu, and English audio tracks on these platforms: Mad Max Fury Road 2015 Tamil Dubbed Movie -PATCHED