CIFS: mounts with multiuser and cruid options do not use the correct user creds when traversing DFS namespace

Solution Verified - Updated -

Issue

  • A user can not access a SMB share under a DFS namespace.
  • The user's access is limited by the access rights of a different user whose credential cache was used to mount the DFS namespace.
  • This behavior is limiting access to shares, but is not granting additional access to shares.

Environment

  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8 beta
  • Kerberos or NTLM based security flavors
  • DFS share mounted with SMB or SMB2
  • mount.cifs mount options includemultiuser and cruid.

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