cifs: Fix regression in LANMAN (LM) auth code

LANMAN response length was changed to 16 bytes instead of 24 bytes.
Revert it back to 24 bytes.

Signed-off-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com>
CC: stable@kernel.org
Signed-off-by: Steve French <sfrench@us.ibm.com>

diff --git a/fs/cifs/sess.c b/fs/cifs/sess.c
index 1adc962..1676570 100644 (file)
--- a/fs/cifs/sess.c
+++ b/fs/cifs/sess.c
@@ -656,13 +656,13 @@ ssetup_ntlmssp_authenticate:
 
        if (type == LANMAN) {
 #ifdef CONFIG_CIFS_WEAK_PW_HASH
-               char lnm_session_key[CIFS_SESS_KEY_SIZE];
+               char lnm_session_key[CIFS_AUTH_RESP_SIZE];
 
                pSMB->req.hdr.Flags2 &= ~SMBFLG2_UNICODE;
 
                /* no capabilities flags in old lanman negotiation */
 
-               pSMB->old_req.PasswordLength = cpu_to_le16(CIFS_SESS_KEY_SIZE);
+               pSMB->old_req.PasswordLength = cpu_to_le16(CIFS_AUTH_RESP_SIZE);
 
                /* Calculate hash with password and copy into bcc_ptr.
                 * Encryption Key (stored as in cryptkey) gets used if the
@@ -675,8 +675,8 @@ ssetup_ntlmssp_authenticate:
                                        true : false, lnm_session_key);
 
                ses->flags |= CIFS_SES_LANMAN;
-               memcpy(bcc_ptr, (char *)lnm_session_key, CIFS_SESS_KEY_SIZE);
-               bcc_ptr += CIFS_SESS_KEY_SIZE;
+               memcpy(bcc_ptr, (char *)lnm_session_key, CIFS_AUTH_RESP_SIZE);
+               bcc_ptr += CIFS_AUTH_RESP_SIZE;
 
                /* can not sign if LANMAN negotiated so no need
                to calculate signing key? but what if server