From: Jerome Marchand <jmarchan@redhat.com>
Date: Thu, 26 May 2016 09:52:24 +0000 (+0200)
Subject: cifs: use CIFS_MAX_DOMAINNAME_LEN when converting the domain name
X-Git-Tag: v3.16.37~83
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=30622d3dbf69f757fcca2d63678e5cfbd5af9113;p=thirdparty%2Fkernel%2Fstable.git

cifs: use CIFS_MAX_DOMAINNAME_LEN when converting the domain name

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@redhat.com>
Signed-off-by: Steve French <smfrench@gmail.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

diff --git a/fs/cifs/sess.c b/fs/cifs/sess.c
index 29de79ab3a6e5..467fb62468826 100644
--- a/fs/cifs/sess.c
+++ b/fs/cifs/sess.c
@@ -429,7 +429,7 @@ int build_ntlmssp_auth_blob(unsigned char *pbuffer,
 	} 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);