merged into cifs-2.6.git for-next
Let me know if missed any must fix ASAP patches that have to go in.
On Wed, Apr 12, 2017 at 3:32 PM, Pavel Shilovsky <pshilov@xxxxxxxxxxxxx> wrote:
> Commit ef65aaede23f ("smb2: Enforce sec= mount option") changed the
> behavior of a mount command to enforce a specified security mechanism
> during mounting. On another hand according to the spec if SMB3 server
> doesn't respond with a security context it implies that it supports
> NTLMSSP. The current code doesn't keep it in mind and fails a mount
> for such servers if no security mechanism is specified. Fix this by
> indicating that a server supports NTLMSSP if a security context isn't
> returned during negotiate phase. This allows the code to use NTLMSSP
> by default for SMB3 mounts.
>
> Signed-off-by: Pavel Shilovsky <pshilov@xxxxxxxxxxxxx>
> ---
> fs/cifs/smb2pdu.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
> index 1bd5d30..02da648 100644
> --- a/fs/cifs/smb2pdu.c
> +++ b/fs/cifs/smb2pdu.c
> @@ -562,8 +562,10 @@ SMB2_negotiate(const unsigned int xid, struct cifs_ses *ses)
> * but for time being this is our only auth choice so doesn't matter.
> * We just found a server which sets blob length to zero expecting raw.
> */
> - if (blob_length == 0)
> + if (blob_length == 0) {
> cifs_dbg(FYI, "missing security blob on negprot\n");
> + server->sec_ntlmssp = true;
> + }
>
> rc = cifs_enable_signing(server, ses->sign);
> if (rc)
> --
> 2.7.4
>
--
Thanks,
Steve
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