kernel: cifs: always do is_path_accessible check in cifs_mount

The setupcifssb function in fs/cifs/connect.c in the Linux kernel before 2.6.39 does not properly handle DFS referrals, which allows remote CIFS servers to cause a denial of service system crash by placing a referral at the root of a share...

kernel: cifs: always do is_path_accessible check in cifs_mount

The setupcifssb function in fs/cifs/connect.c in the Linux kernel before 2.6.39 does not properly handle DFS referrals, which allows remote CIFS servers to cause a denial of service system crash by placing a referral at the root of a share...