[CIFS] use krb5 session key from first SMB session after a NegProt
Currently, any new kerberos SMB session overwrites the server's session
key. The session key should only be set by the first SMB session set up
on the socket.
Signed-off-by: Jeff Layton <jlayton@tupile.poochiereds.net>
Signed-off-by: Steve French <sfrench@us.ibm.com>
diff --git a/fs/cifs/sess.c b/fs/cifs/sess.c
index d0cb469..ce698d5 100644
--- a/fs/cifs/sess.c
+++ b/fs/cifs/sess.c
@@ -528,9 +528,11 @@
rc = -EOVERFLOW;
goto ssetup_exit;
}
- ses->server->mac_signing_key.len = msg->sesskey_len;
- memcpy(ses->server->mac_signing_key.data.krb5, msg->data,
- msg->sesskey_len);
+ if (first_time) {
+ ses->server->mac_signing_key.len = msg->sesskey_len;
+ memcpy(ses->server->mac_signing_key.data.krb5,
+ msg->data, msg->sesskey_len);
+ }
pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC;
capabilities |= CAP_EXTENDED_SECURITY;
pSMB->req.Capabilities = cpu_to_le32(capabilities);