UT is not in control of its playoff destiny. The Vols need to win out. The Vols probably need style points as well.
For UT to get in, UGA can't lose the CG.
Either Michigan or tOSU will have at least one loss. It would likely knock UT out if Michigan lost a game and then beat tOSU before winning the Big10. In that scenario, they'd probably both get in.
The Pac12 can produce a 1 loss team that would get in ahead of UT. OTOH, it seems just as likely that no one will have less than 2 losses. USC and UCLA play each other. Oregon has Oregon State, UW, and Utah left and would still have to win the championship game. USC has a lay up with Colorado but then has UCLA and Notre Dame. If UCLA can beat USC... they have the clearest path otherwise with Arizona and Cal. The problem for UT is that those teams get a chance to play each other to get a quality win that jumps them in the rankings.
UT really needs Texas to beat TCU. Baylor might be able to do it but Iowa State isn't very good this year. A one loss TCU team would still be the Big 12 champion and could that might matter.
The ACC really should be out of the running right now... but who knows what would happen with a one loss UNC team?