I am using 2 operation system via Grub, Linux for work and Windows for games.
My question is, if I get some virus on Windows, can it some how damage my files that are stored on a disk with Linux? Or get access for files on Linux disk? Can a virtual disk be exposed to some another vulnerabilities from another virtual disk with infected Windows?
Sure it can. The virus can and will do what it is supposed to do. "Virus" is a very broad term for this question. Can you give a little more details or context?