I have an end user using InDesign CC on OSX and is unable to save files to or edit files that are stored on a SMB file server. I have replicated the issue on a brand-new install of InDesign CC on OSX and cannot save even a blank InDesign document to the SMB share. No other Adobe CC apps are affected.
I replicated the issue on a brand-new, clean install on the very first document I tried creating.
This does, unfortunately, not help, but only for info: I have no trouble with my Windows PC to save InDesign files on a Samba share.