The sad news comes just two years after Jason became an official member of the band, who’s hits include American Idiot, Basket Case and Good Riddance.
The band released a statement reading: "We have some news to report regarding our brother Jason White, and wanted you to hear it from us before word spread.
"Jason recently underwent a routine tonsillectomy, and his doctors discovered a treatable form of tonsil cancer. Thankfully they caught it early and he should make a full and speedy recovery.
"Please join us in sending him love and positive healing vibes during this time."
Jason became a fully fledged member of the band in 2012, join gin original threesome Billie Joe Armstorng, Mike Dirnt and Tre Cool.