Add approriate TALLOC_CTX's thoughout the spnego code. No more implicit NULL contexts.

Jeremy.

10 files changed, 65 insertions, 74 deletions

diff --git a/source3/include/proto.h b/source3/include/proto.h
index 4af95090f03..75e4aaf7a8c 100644
--- a/source3/include/proto.h
+++ b/source3/include/proto.h
@@ -2805,21 +2805,21 @@ bool spnego_parse_negTokenInit(TALLOC_CTX *ctx,
 			       char *OIDs[ASN1_MAX_OIDS],
 			       char **principal,
 			       DATA_BLOB *secblob);
-DATA_BLOB gen_negTokenTarg(const char *OIDs[], DATA_BLOB blob);
-DATA_BLOB spnego_gen_krb5_wrap(const DATA_BLOB ticket, const uint8 tok_id[2]);
-bool spnego_parse_krb5_wrap(DATA_BLOB blob, DATA_BLOB *ticket, uint8 tok_id[2]);
+DATA_BLOB spnego_gen_krb5_wrap(TALLOC_CTX *ctx, const DATA_BLOB ticket, const uint8 tok_id[2]);
+bool spnego_parse_krb5_wrap(TALLOC_CTX *ctx, DATA_BLOB blob, DATA_BLOB *ticket, uint8 tok_id[2]);
 int spnego_gen_krb5_negTokenInit(TALLOC_CTX *ctx,
 			    const char *principal, int time_offset,
 			    DATA_BLOB *targ,
 			    DATA_BLOB *session_key_krb5, uint32 extra_ap_opts,
 			    time_t *expire_time);
-bool spnego_parse_challenge(const DATA_BLOB blob,
+bool spnego_parse_challenge(TALLOC_CTX *ctx, const DATA_BLOB blob,
 			    DATA_BLOB *chal1, DATA_BLOB *chal2);
-DATA_BLOB spnego_gen_auth(DATA_BLOB blob);
-bool spnego_parse_auth(DATA_BLOB blob, DATA_BLOB *auth);
-DATA_BLOB spnego_gen_auth_response(DATA_BLOB *reply, NTSTATUS nt_status,
+DATA_BLOB spnego_gen_auth(TALLOC_CTX *ctx, DATA_BLOB blob);
+bool spnego_parse_auth(TALLOC_CTX *ctx, DATA_BLOB blob, DATA_BLOB *auth);
+DATA_BLOB spnego_gen_auth_response(TALLOC_CTX *ctx, DATA_BLOB *reply, NTSTATUS nt_status,
 				   const char *mechOID);
-bool spnego_parse_auth_response(DATA_BLOB blob, NTSTATUS nt_status,
+bool spnego_parse_auth_response(TALLOC_CTX *ctx,
+				DATA_BLOB blob, NTSTATUS nt_status,
 				const char *mechOID,
 				DATA_BLOB *auth);
 
diff --git a/source3/libads/sasl.c b/source3/libads/sasl.c
index d0b3f2a7ec9..f4a0ac627eb 100644
--- a/source3/libads/sasl.c
+++ b/source3/libads/sasl.c
@@ -196,7 +196,7 @@ static ADS_STATUS ads_sasl_spnego_ntlmssp_bind(ADS_STRUCT *ads)
 						OIDs_ntlm, &blob_out, NULL);
 			} else {
 				/* wrap it in SPNEGO */
-				msg1 = spnego_gen_auth(blob_out);
+				msg1 = spnego_gen_auth(talloc_tos(), blob_out);
 			}
 
 			data_blob_free(&blob_out);
@@ -232,7 +232,7 @@ static ADS_STATUS ads_sasl_spnego_ntlmssp_bind(ADS_STRUCT *ads)
 		    (rc == LDAP_SASL_BIND_IN_PROGRESS)) {
 			DATA_BLOB tmp_blob = data_blob_null;
 			/* the server might give us back two challenges */
-			if (!spnego_parse_challenge(blob, &blob_in, 
+			if (!spnego_parse_challenge(talloc_tos(), blob, &blob_in, 
 						    &tmp_blob)) {
 
 				TALLOC_FREE(ntlmssp_state);
@@ -242,7 +242,7 @@ static ADS_STATUS ads_sasl_spnego_ntlmssp_bind(ADS_STRUCT *ads)
 			}
 			data_blob_free(&tmp_blob);
 		} else if (rc == LDAP_SASL_BIND_IN_PROGRESS) {
-			if (!spnego_parse_auth_response(blob, nt_status, OID_NTLMSSP, 
+			if (!spnego_parse_auth_response(talloc_tos(), blob, nt_status, OID_NTLMSSP, 
 							&blob_in)) {
 
 				TALLOC_FREE(ntlmssp_state);
@@ -534,7 +534,7 @@ static ADS_STATUS ads_sasl_spnego_gsskrb5_bind(ADS_STRUCT *ads, const gss_name_t
 		wrapped = data_blob_null;
 	}
 
-	ok = spnego_parse_auth_response(wrapped, NT_STATUS_OK,
+	ok = spnego_parse_auth_response(talloc_tos(), wrapped, NT_STATUS_OK,
 					OID_KERBEROS5_OLD,
 					&unwrapped);
 	if (scred) ber_bvfree(scred);
diff --git a/source3/libsmb/cliconnect.c b/source3/libsmb/cliconnect.c
index 86448ff6b3a..2d3e5a56a7d 100644
--- a/source3/libsmb/cliconnect.c
+++ b/source3/libsmb/cliconnect.c
@@ -1098,11 +1098,11 @@ static void cli_session_setup_ntlmssp_done(struct tevent_req *subreq)
 	    && NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 		DATA_BLOB tmp_blob = data_blob_null;
 		/* the server might give us back two challenges */
-		parse_ret = spnego_parse_challenge(blob_in, &msg_in,
+		parse_ret = spnego_parse_challenge(state, blob_in, &msg_in,
 						   &tmp_blob);
 		data_blob_free(&tmp_blob);
 	} else {
-		parse_ret = spnego_parse_auth_response(blob_in, status,
+		parse_ret = spnego_parse_auth_response(state, blob_in, status,
 						       OID_NTLMSSP, &msg_in);
 	}
 	state->turn += 1;
@@ -1128,7 +1128,7 @@ static void cli_session_setup_ntlmssp_done(struct tevent_req *subreq)
 		return;
 	}
 
-	state->blob_out = spnego_gen_auth(blob_out);
+	state->blob_out = spnego_gen_auth(state, blob_out);
 	TALLOC_FREE(subreq);
 	if (tevent_req_nomem(state->blob_out.data, req)) {
 		return;
diff --git a/source3/libsmb/clifsinfo.c b/source3/libsmb/clifsinfo.c
index aa7d1fb9ad0..9e4d9fa8ad9 100644
--- a/source3/libsmb/clifsinfo.c
+++ b/source3/libsmb/clifsinfo.c
@@ -764,7 +764,7 @@ static NTSTATUS make_cli_gss_blob(TALLOC_CTX *ctx,
 		p_tok_in = GSS_C_NO_BUFFER;
 	} else {
 		/* Remove the SPNEGO wrapper */
-		if (!spnego_parse_auth_response(spnego_blob_in, status_in, OID_KERBEROS5, &blob_in)) {
+		if (!spnego_parse_auth_response(ctx, spnego_blob_in, status_in, OID_KERBEROS5, &blob_in)) {
 			status = NT_STATUS_UNSUCCESSFUL;
 			goto fail;
 		}
diff --git a/source3/libsmb/clispnego.c b/source3/libsmb/clispnego.c
index d5867120eac..66e023a91d1 100644
--- a/source3/libsmb/clispnego.c
+++ b/source3/libsmb/clispnego.c
@@ -216,7 +216,7 @@ bool spnego_parse_negTokenInit(TALLOC_CTX *ctx,
 /*
   generate a krb5 GSS-API wrapper packet given a ticket
 */
-DATA_BLOB spnego_gen_krb5_wrap(const DATA_BLOB ticket, const uint8 tok_id[2])
+DATA_BLOB spnego_gen_krb5_wrap(TALLOC_CTX *ctx, const DATA_BLOB ticket, const uint8 tok_id[2])
 {
 	ASN1_DATA *data;
 	DATA_BLOB ret;
@@ -237,7 +237,7 @@ DATA_BLOB spnego_gen_krb5_wrap(const DATA_BLOB ticket, const uint8 tok_id[2])
 		DEBUG(1,("Failed to build krb5 wrapper at offset %d\n", (int)data->ofs));
 	}
 
-	ret = data_blob(data->data, data->length);
+	ret = data_blob_talloc(ctx, data->data, data->length);
 	asn1_free(data);
 
 	return ret;
@@ -246,7 +246,7 @@ DATA_BLOB spnego_gen_krb5_wrap(const DATA_BLOB ticket, const uint8 tok_id[2])
 /*
   parse a krb5 GSS-API wrapper packet giving a ticket
 */
-bool spnego_parse_krb5_wrap(DATA_BLOB blob, DATA_BLOB *ticket, uint8 tok_id[2])
+bool spnego_parse_krb5_wrap(TALLOC_CTX *ctx, DATA_BLOB blob, DATA_BLOB *ticket, uint8 tok_id[2])
 {
 	bool ret;
 	ASN1_DATA *data;
@@ -268,7 +268,7 @@ bool spnego_parse_krb5_wrap(DATA_BLOB blob, DATA_BLOB *ticket, uint8 tok_id[2])
 	} else {
 		asn1_read(data, tok_id, 2);
 		data_remaining -= 2;
-		*ticket = data_blob(NULL, data_remaining);
+		*ticket = data_blob_talloc(ctx, NULL, data_remaining);
 		asn1_read(data, ticket->data, ticket->length);
 	}
 
@@ -309,7 +309,7 @@ int spnego_gen_krb5_negTokenInit(TALLOC_CTX *ctx,
 		return retval;
 
 	/* wrap that up in a nice GSS-API wrapping */
-	tkt_wrapped = spnego_gen_krb5_wrap(tkt, TOK_ID_KRB_AP_REQ);
+	tkt_wrapped = spnego_gen_krb5_wrap(ctx, tkt, TOK_ID_KRB_AP_REQ);
 
 	/* and wrap that in a shiny SPNEGO wrapper */
 	*targ = spnego_gen_negTokenInit(ctx, krb_mechs, &tkt_wrapped, NULL);
@@ -324,7 +324,7 @@ int spnego_gen_krb5_negTokenInit(TALLOC_CTX *ctx,
 /*
   parse a spnego NTLMSSP challenge packet giving two security blobs
 */
-bool spnego_parse_challenge(const DATA_BLOB blob,
+bool spnego_parse_challenge(TALLOC_CTX *ctx, const DATA_BLOB blob,
 			    DATA_BLOB *chal1, DATA_BLOB *chal2)
 {
 	bool ret;
@@ -351,13 +351,13 @@ bool spnego_parse_challenge(const DATA_BLOB blob,
 	asn1_end_tag(data);
 
 	asn1_start_tag(data,ASN1_CONTEXT(2));
-	asn1_read_OctetString(data, talloc_autofree_context(), chal1);
+	asn1_read_OctetString(data, ctx, chal1);
 	asn1_end_tag(data);
 
 	/* the second challenge is optional (XP doesn't send it) */
 	if (asn1_tag_remaining(data)) {
 		asn1_start_tag(data,ASN1_CONTEXT(3));
-		asn1_read_OctetString(data, talloc_autofree_context(), chal2);
+		asn1_read_OctetString(data, ctx, chal2);
 		asn1_end_tag(data);
 	}
 
@@ -379,7 +379,7 @@ bool spnego_parse_challenge(const DATA_BLOB blob,
 /*
  generate a SPNEGO auth packet. This will contain the encrypted passwords
 */
-DATA_BLOB spnego_gen_auth(DATA_BLOB blob)
+DATA_BLOB spnego_gen_auth(TALLOC_CTX *ctx, DATA_BLOB blob)
 {
 	ASN1_DATA *data;
 	DATA_BLOB ret;
@@ -397,7 +397,7 @@ DATA_BLOB spnego_gen_auth(DATA_BLOB blob)
 	asn1_pop_tag(data);
 	asn1_pop_tag(data);
 
-	ret = data_blob(data->data, data->length);
+	ret = data_blob_talloc(ctx, data->data, data->length);
 
 	asn1_free(data);
 
@@ -407,7 +407,7 @@ DATA_BLOB spnego_gen_auth(DATA_BLOB blob)
 /*
  parse a SPNEGO auth packet. This contains the encrypted passwords
 */
-bool spnego_parse_auth(DATA_BLOB blob, DATA_BLOB *auth)
+bool spnego_parse_auth(TALLOC_CTX *ctx, DATA_BLOB blob, DATA_BLOB *auth)
 {
 	ssize_t len;
 	struct spnego_data token;
@@ -425,7 +425,7 @@ bool spnego_parse_auth(DATA_BLOB blob, DATA_BLOB *auth)
 		return false;
 	}
 
-	*auth = data_blob_talloc(talloc_tos(),
+	*auth = data_blob_talloc(ctx,
 				 token.negTokenTarg.responseToken.data,
 				 token.negTokenTarg.responseToken.length);
 	spnego_free_data(&token);
@@ -436,7 +436,8 @@ bool spnego_parse_auth(DATA_BLOB blob, DATA_BLOB *auth)
 /*
   generate a minimal SPNEGO response packet.  Doesn't contain much.
 */
-DATA_BLOB spnego_gen_auth_response(DATA_BLOB *reply, NTSTATUS nt_status,
+DATA_BLOB spnego_gen_auth_response(TALLOC_CTX *ctx,
+				   DATA_BLOB *reply, NTSTATUS nt_status,
 				   const char *mechOID)
 {
 	ASN1_DATA *data;
@@ -477,7 +478,7 @@ DATA_BLOB spnego_gen_auth_response(DATA_BLOB *reply, NTSTATUS nt_status,
 	asn1_pop_tag(data);
 	asn1_pop_tag(data);
 
-	ret = data_blob(data->data, data->length);
+	ret = data_blob_talloc(ctx, data->data, data->length);
 	asn1_free(data);
 	return ret;
 }
@@ -485,7 +486,8 @@ DATA_BLOB spnego_gen_auth_response(DATA_BLOB *reply, NTSTATUS nt_status,
 /*
  parse a SPNEGO auth packet. This contains the encrypted passwords
 */
-bool spnego_parse_auth_response(DATA_BLOB blob, NTSTATUS nt_status,
+bool spnego_parse_auth_response(TALLOC_CTX *ctx,
+			        DATA_BLOB blob, NTSTATUS nt_status,
 				const char *mechOID,
 				DATA_BLOB *auth)
 {
@@ -521,7 +523,7 @@ bool spnego_parse_auth_response(DATA_BLOB blob, NTSTATUS nt_status,
 
 		if (asn1_tag_remaining(data)) {
 			asn1_start_tag(data,ASN1_CONTEXT(2));
-			asn1_read_OctetString(data, talloc_autofree_context(), auth);
+			asn1_read_OctetString(data, ctx, auth);
 			asn1_end_tag(data);
 		}
 	} else if (negResult == SPNEGO_ACCEPT_INCOMPLETE) {
@@ -535,7 +537,7 @@ bool spnego_parse_auth_response(DATA_BLOB blob, NTSTATUS nt_status,
 	if (asn1_tag_remaining(data)) {
 		DATA_BLOB mechList = data_blob_null;
 		asn1_start_tag(data, ASN1_CONTEXT(3));
-		asn1_read_OctetString(data, talloc_autofree_context(), &mechList);
+		asn1_read_OctetString(data, ctx, &mechList);
 		asn1_end_tag(data);
 		data_blob_free(&mechList);
 		DEBUG(5,("spnego_parse_auth_response received mechListMIC, "
diff --git a/source3/rpc_client/cli_pipe.c b/source3/rpc_client/cli_pipe.c
index 3ca9271a820..50b0efadb29 100644
--- a/source3/rpc_client/cli_pipe.c
+++ b/source3/rpc_client/cli_pipe.c
@@ -1302,7 +1302,7 @@ static NTSTATUS create_krb5_auth_bind_req(struct rpc_pipe_client *cli,
 	}
 
 	/* wrap that up in a nice GSS-API wrapping */
-	tkt_wrapped = spnego_gen_krb5_wrap(tkt, TOK_ID_KRB_AP_REQ);
+	tkt_wrapped = spnego_gen_krb5_wrap(talloc_tos(), tkt, TOK_ID_KRB_AP_REQ);
 
 	data_blob_free(&tkt);
 
@@ -2496,7 +2496,7 @@ static NTSTATUS rpc_finish_spnego_ntlmssp_bind_send(struct tevent_req *req,
 	 * The server might give us back two challenges - tmp_blob is for the
 	 * second.
 	 */
-	if (!spnego_parse_challenge(auth_info.credentials,
+	if (!spnego_parse_challenge(state, auth_info.credentials,
 				    &server_ntlm_response, &tmp_blob)) {
 		data_blob_free(&server_ntlm_response);
 		data_blob_free(&tmp_blob);
@@ -2520,7 +2520,7 @@ static NTSTATUS rpc_finish_spnego_ntlmssp_bind_send(struct tevent_req *req,
 	}
 
 	/* SPNEGO wrap the client reply. */
-	tmp_blob = spnego_gen_auth(client_reply);
+	tmp_blob = spnego_gen_auth(state, client_reply);
 	data_blob_free(&client_reply);
 	client_reply = tmp_blob;
 	tmp_blob = data_blob_null;
@@ -2577,7 +2577,7 @@ static void rpc_bind_ntlmssp_api_done(struct tevent_req *subreq)
 	}
 
 	/* Check we got a valid auth response. */
-	if (!spnego_parse_auth_response(auth.credentials,
+	if (!spnego_parse_auth_response(talloc_tos(), auth.credentials,
 					NT_STATUS_OK,
 					OID_NTLMSSP, &tmp_blob)) {
 		data_blob_free(&tmp_blob);
diff --git a/source3/rpc_server/srv_pipe.c b/source3/rpc_server/srv_pipe.c
index e69bd9e31fb..0132400029d 100644
--- a/source3/rpc_server/srv_pipe.c
+++ b/source3/rpc_server/srv_pipe.c
@@ -887,21 +887,18 @@ static bool pipe_spnego_auth_bind_negotiate(pipes_struct *p,
 		}
 
 		/* Generate the response blob we need for step 2 of the bind. */
-		*response = spnego_gen_auth_response(&chal, status, OID_NTLMSSP);
+		*response = spnego_gen_auth_response(mem_ctx, &chal, status, OID_NTLMSSP);
 	} else {
 		/*
 		 * SPNEGO negotiate down to NTLMSSP. The subsequent
 		 * code to process follow-up packets is not complete
 		 * yet. JRA.
 		 */
-		*response = spnego_gen_auth_response(NULL,
+		*response = spnego_gen_auth_response(mem_ctx, NULL,
 					NT_STATUS_MORE_PROCESSING_REQUIRED,
 					OID_NTLMSSP);
 	}
 
-	/* Make sure data is bound to the memctx, to be freed the caller */
-	talloc_steal(mem_ctx, response->data);
-
 	/* auth_pad_len will be handled by the caller */
 
 	p->auth.a_u.auth_ntlmssp_state = a;
@@ -954,7 +951,7 @@ static bool pipe_spnego_auth_bind_continue(pipes_struct *p,
 		goto err;
 	}
 
-	if (!spnego_parse_auth(pauth_info->credentials, &auth_blob)) {
+	if (!spnego_parse_auth(talloc_tos(), pauth_info->credentials, &auth_blob)) {
 		DEBUG(0,("pipe_spnego_auth_bind_continue: invalid SPNEGO blob.\n"));
 		goto err;
 	}
@@ -971,10 +968,7 @@ static bool pipe_spnego_auth_bind_continue(pipes_struct *p,
 	data_blob_free(&auth_blob);
 
 	/* Generate the spnego "accept completed" blob - no incoming data. */
-	*response = spnego_gen_auth_response(&auth_reply, NT_STATUS_OK, OID_NTLMSSP);
-
-	/* Make sure data is bound to the memctx, to be freed the caller */
-	talloc_steal(mem_ctx, response->data);
+	*response = spnego_gen_auth_response(mem_ctx, &auth_reply, NT_STATUS_OK, OID_NTLMSSP);
 
 	data_blob_free(&auth_reply);
 
diff --git a/source3/smbd/seal.c b/source3/smbd/seal.c
index 2c7d97fd6d9..0cf730ee4f8 100644
--- a/source3/smbd/seal.c
+++ b/source3/smbd/seal.c
@@ -422,7 +422,7 @@ static NTSTATUS srv_enc_spnego_gss_negotiate(unsigned char **ppdata, size_t *p_d
 	gss_release_buffer(&min, &out_buf);
 
 	/* Wrap in SPNEGO. */
-	response = spnego_gen_auth_response(&auth_reply, status, OID_KERBEROS5);
+	response = spnego_gen_auth_response(talloc_tos(), &auth_reply, status, OID_KERBEROS5);
 	data_blob_free(&auth_reply);
 
 	SAFE_FREE(*ppdata);
@@ -460,7 +460,7 @@ static NTSTATUS srv_enc_ntlm_negotiate(unsigned char **ppdata, size_t *p_data_si
 	 * for success ... */
 
 	if (spnego_wrap) {
-		response = spnego_gen_auth_response(&chal, status, OID_NTLMSSP);
+		response = spnego_gen_auth_response(talloc_tos(), &chal, status, OID_NTLMSSP);
 		data_blob_free(&chal);
 	} else {
 		/* Return the raw blob. */
@@ -565,7 +565,7 @@ static NTSTATUS srv_enc_spnego_ntlm_auth(connection_struct *conn,
 	}
 
 	blob = data_blob_const(*ppdata, *p_data_size);
-	if (!spnego_parse_auth(blob, &auth)) {
+	if (!spnego_parse_auth(talloc_tos(), blob, &auth)) {
 		srv_free_encryption_context(&partial_srv_trans_enc_ctx);
 		return NT_STATUS_INVALID_PARAMETER;
 	}
@@ -582,7 +582,7 @@ static NTSTATUS srv_enc_spnego_ntlm_auth(connection_struct *conn,
 	 * So set mechOID to NULL here.
 	 */
 
-	response = spnego_gen_auth_response(&auth_reply, status, NULL);
+	response = spnego_gen_auth_response(talloc_tos(), &auth_reply, status, NULL);
 	data_blob_free(&auth_reply);
 
 	if (NT_STATUS_IS_OK(status)) {
diff --git a/source3/smbd/sesssetup.c b/source3/smbd/sesssetup.c
index 15cbcbfb9a8..9d8e7ece2c7 100644
--- a/source3/smbd/sesssetup.c
+++ b/source3/smbd/sesssetup.c
@@ -272,7 +272,7 @@ static void reply_spnego_kerberos(struct smb_request *req,
 		return;
 	}
 
-	if (!spnego_parse_krb5_wrap(*secblob, &ticket, tok_id)) {
+	if (!spnego_parse_krb5_wrap(mem_ctx, *secblob, &ticket, tok_id)) {
 		talloc_destroy(mem_ctx);
 		reply_nterror(req, nt_status_squash(NT_STATUS_LOGON_FAILURE));
 		return;
@@ -603,12 +603,12 @@ static void reply_spnego_kerberos(struct smb_request *req,
 
         /* wrap that up in a nice GSS-API wrapping */
 	if (NT_STATUS_IS_OK(ret)) {
-		ap_rep_wrapped = spnego_gen_krb5_wrap(ap_rep,
+		ap_rep_wrapped = spnego_gen_krb5_wrap(talloc_tos(), ap_rep,
 				TOK_ID_KRB_AP_REP);
 	} else {
 		ap_rep_wrapped = data_blob_null;
 	}
-	response = spnego_gen_auth_response(&ap_rep_wrapped, ret,
+	response = spnego_gen_auth_response(talloc_tos(), &ap_rep_wrapped, ret,
 			mechOID);
 	reply_sesssetup_blob(req, response, ret);
 
@@ -693,7 +693,8 @@ static void reply_spnego_ntlmssp(struct smb_request *req,
   out:
 
 	if (wrap) {
-		response = spnego_gen_auth_response(ntlmssp_blob,
+		response = spnego_gen_auth_response(talloc_tos(),
+				ntlmssp_blob,
 				nt_status, OID);
 	} else {
 		response = *ntlmssp_blob;
@@ -781,7 +782,7 @@ static void reply_spnego_downgrade_to_ntlmssp(struct smb_request *req,
 	DEBUG(3,("reply_spnego_downgrade_to_ntlmssp: Got krb5 ticket in SPNEGO "
 		"but set to downgrade to NTLMSSP\n"));
 
-	response = spnego_gen_auth_response(NULL,
+	response = spnego_gen_auth_response(talloc_tos(), NULL,
 			NT_STATUS_MORE_PROCESSING_REQUIRED,
 			OID_NTLMSSP);
 	reply_sesssetup_blob(req, response, NT_STATUS_MORE_PROCESSING_REQUIRED);
@@ -881,7 +882,7 @@ static void reply_spnego_auth(struct smb_request *req,
 	NTSTATUS status = NT_STATUS_LOGON_FAILURE;
 	struct smbd_server_connection *sconn = req->sconn;
 
-	if (!spnego_parse_auth(blob1, &auth)) {
+	if (!spnego_parse_auth(talloc_tos(), blob1, &auth)) {
 #if 0
 		file_save("auth.dat", blob1.data, blob1.length);
 #endif
diff --git a/source3/smbd/smb2_sesssetup.c b/source3/smbd/smb2_sesssetup.c
index e8c69eaad55..f5272b35cd9 100644
--- a/source3/smbd/smb2_sesssetup.c
+++ b/source3/smbd/smb2_sesssetup.c
@@ -192,7 +192,7 @@ static NTSTATUS smbd_smb2_session_setup_krb5(struct smbd_smb2_session *session,
 	bool username_was_mapped = false;
 	bool map_domainuser_to_guest = false;
 
-	if (!spnego_parse_krb5_wrap(*secblob, &ticket, tok_id)) {
+	if (!spnego_parse_krb5_wrap(talloc_tos(), *secblob, &ticket, tok_id)) {
 		status = NT_STATUS_LOGON_FAILURE;
 		goto fail;
 	}
@@ -488,10 +488,11 @@ static NTSTATUS smbd_smb2_session_setup_krb5(struct smbd_smb2_session *session,
         status = NT_STATUS_OK;
 
 	/* wrap that up in a nice GSS-API wrapping */
-	ap_rep_wrapped = spnego_gen_krb5_wrap(ap_rep,
+	ap_rep_wrapped = spnego_gen_krb5_wrap(talloc_tos(), ap_rep,
 				TOK_ID_KRB_AP_REP);
 
 	secblob_out = spnego_gen_auth_response(
+					talloc_tos(),
 					&ap_rep_wrapped,
 					status,
 					mechOID);
@@ -524,6 +525,7 @@ static NTSTATUS smbd_smb2_session_setup_krb5(struct smbd_smb2_session *session,
 
 	ap_rep_wrapped = data_blob_null;
 	secblob_out = spnego_gen_auth_response(
+					talloc_tos(),
 					&ap_rep_wrapped,
 					status,
 					mechOID);
@@ -546,7 +548,6 @@ static NTSTATUS smbd_smb2_spnego_negotiate(struct smbd_smb2_session *session,
 {
 	DATA_BLOB secblob_in = data_blob_null;
 	DATA_BLOB chal_out = data_blob_null;
-	DATA_BLOB secblob_out = data_blob_null;
 	char *kerb_mech = NULL;
 	NTSTATUS status;
 
@@ -601,13 +602,11 @@ static NTSTATUS smbd_smb2_spnego_negotiate(struct smbd_smb2_session *session,
 		goto out;
 	}
 
-	secblob_out = spnego_gen_auth_response(&chal_out,
+	*out_security_buffer = spnego_gen_auth_response(smb2req,
+						&chal_out,
 						status,
 						OID_NTLMSSP);
-	*out_security_buffer = data_blob_talloc(smb2req,
-						secblob_out.data,
-						secblob_out.length);
-	if (secblob_out.data && out_security_buffer->data == NULL) {
+	if (out_security_buffer->data == NULL) {
 		status = NT_STATUS_NO_MEMORY;
 		goto out;
 	}
@@ -616,7 +615,6 @@ static NTSTATUS smbd_smb2_spnego_negotiate(struct smbd_smb2_session *session,
   out:
 
 	data_blob_free(&secblob_in);
-	data_blob_free(&secblob_out);
 	data_blob_free(&chal_out);
 	TALLOC_FREE(kerb_mech);
 	if (!NT_STATUS_IS_OK(status) &&
@@ -717,10 +715,9 @@ static NTSTATUS smbd_smb2_spnego_auth(struct smbd_smb2_session *session,
 {
 	DATA_BLOB auth = data_blob_null;
 	DATA_BLOB auth_out = data_blob_null;
-	DATA_BLOB secblob_out = data_blob_null;
 	NTSTATUS status;
 
-	if (!spnego_parse_auth(in_security_buffer, &auth)) {
+	if (!spnego_parse_auth(talloc_tos(), in_security_buffer, &auth)) {
 		TALLOC_FREE(session);
 		return NT_STATUS_LOGON_FAILURE;
 	}
@@ -803,13 +800,10 @@ static NTSTATUS smbd_smb2_spnego_auth(struct smbd_smb2_session *session,
 
 	data_blob_free(&auth);
 
-	secblob_out = spnego_gen_auth_response(&auth_out,
-                               status, NULL);
+	*out_security_buffer = spnego_gen_auth_response(smb2req,
+				&auth_out, status, NULL);
 
-	*out_security_buffer = data_blob_talloc(smb2req,
-						secblob_out.data,
-						secblob_out.length);
-	if (secblob_out.data && out_security_buffer->data == NULL) {
+	if (out_security_buffer->data == NULL) {
 		TALLOC_FREE(session->auth_ntlmssp_state);
 		TALLOC_FREE(session);
 		return NT_STATUS_NO_MEMORY;