Vettel and Magnussen had been called before the race stewards for ignoring yellow flags during the closing stages of Q2.
But following discussions with the FIA it was agreed that both had slowed sufficiently.
The stewards said about Vettel: "The driver's explanation supported by the telemetry satisfied the stewards that, under changing track conditions, the driver had slowed sufficiently and was fully in control."
About Magnussen, the statement said: "While the telemetry was inconclusive due to very different track conditions between laps, the stewards were satisfied from the video and the driver's explanation that he was sufficiently slow and under control."
Alonso was called up for having impeded Esteban Gutierrez, but again the stewards elected to take no action.