Not sure if you mean your vinyl flooring is coming up, or if you think the substrate is delaminating. If it's just the vinyl, then yes, a needle to inject a thin glue should work. If the substrate is delaminating, as plywood often does, you can inject something like Max GPE, which is an epoxy injectable glue. If it's foam board, OSB or particle board, you're screwed.
--2005 F350 Superduty Crewcab, 6.0, 4wd, short bed, 3.73 gears;
--2016 Montana 3711FL, 40'
--2014 Wildcat 327CK, 38' SOLD