linux-kernel - [PATCH 3.16 221/305] cifs: use CIFS_MAX_DOMAINNAME

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Date:	Sat, 13 Aug 2016 18:42:51 +0100
From:	Ben Hutchings <ben@...adent.org.uk>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:	akpm@...ux-foundation.org, "Steve French" <smfrench@...il.com>,
	"Jerome Marchand" <jmarchan@...hat.com>
Subject: [PATCH 3.16 221/305] cifs: use CIFS_MAX_DOMAINNAME_LEN when
 converting the domain name

3.16.37-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Jerome Marchand <jmarchan@...hat.com>

commit 202d772ba02b1deb8835a631cd8255943d1906a0 upstream.

Currently in build_ntlmssp_auth_blob(), when converting the domain
name to UTF16, CIFS_MAX_USERNAME_LEN limit is used. It should be
CIFS_MAX_DOMAINNAME_LEN. This patch fixes this.

Signed-off-by: Jerome Marchand <jmarchan@...hat.com>
Signed-off-by: Steve French <smfrench@...il.com>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 fs/cifs/sess.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/fs/cifs/sess.c
+++ b/fs/cifs/sess.c
@@ -429,7 +429,7 @@ int build_ntlmssp_auth_blob(unsigned cha
 	} else {
 		int len;
 		len = cifs_strtoUTF16((__le16 *)tmp, ses->domainName,
-				      CIFS_MAX_USERNAME_LEN, nls_cp);
+				      CIFS_MAX_DOMAINNAME_LEN, nls_cp);
 		len *= 2; /* unicode is 2 bytes each */
 		sec_blob->DomainName.BufferOffset = cpu_to_le32(tmp - pbuffer);
 		sec_blob->DomainName.Length = cpu_to_le16(len);