Patch "Fix SMB3.1.1 guest authentication to Samba" has been added to the 4.4-stable tree

Patch "Fix SMB3.1.1 guest authentication to Samba" has been added to the 4.4-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    Fix SMB3.1.1 guest authentication to Samba

to the 4.4-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     fix-smb3.1.1-guest-authentication-to-samba.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 23586b66d84ba3184b8820277f3fc42761640f87 Mon Sep 17 00:00:00 2001
From: Steve French <smfrench@gmail.com>
Date: Mon, 18 Sep 2017 18:18:45 -0500
Subject: Fix SMB3.1.1 guest authentication to Samba

From: Steve French <smfrench@gmail.com>

commit 23586b66d84ba3184b8820277f3fc42761640f87 upstream.

Samba rejects SMB3.1.1 dialect (vers=3.1.1) negotiate requests from
the kernel client due to the two byte pad at the end of the negotiate
contexts.

Signed-off-by: Steve French <smfrench@gmail.com>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 fs/cifs/smb2pdu.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -361,7 +361,7 @@ assemble_neg_contexts(struct smb2_negoti
 	build_encrypt_ctxt((struct smb2_encryption_neg_context *)pneg_ctxt);
 	req->NegotiateContextOffset = cpu_to_le32(OFFSET_OF_NEG_CONTEXT);
 	req->NegotiateContextCount = cpu_to_le16(2);
-	inc_rfc1001_len(req, 4 + sizeof(struct smb2_preauth_neg_context) + 2
+	inc_rfc1001_len(req, 4 + sizeof(struct smb2_preauth_neg_context)
 			+ sizeof(struct smb2_encryption_neg_context)); /* calculate hash */
 }
 #else


Patches currently in stable-queue which might be from smfrench@gmail.com are

queue-4.4/smb3-don-t-ignore-o_sync-o_dsync-and-o_direct-flags.patch
queue-4.4/fix-smb3.1.1-guest-authentication-to-samba.patch
queue-4.4/cifs-release-auth_key.response-for-reconnect.patch
queue-4.4/smb-validate-negotiate-to-protect-against-downgrade-even-if-signing-off.patch