diff --git a/include/uapi/linux/dcbnl.h b/include/uapi/linux/dcbnl.h
index a791a94013a6..dc7ef96207ca 100644
--- a/include/uapi/linux/dcbnl.h
+++ b/include/uapi/linux/dcbnl.h
@@ -218,6 +218,9 @@ struct cee_pfc {
 #define IEEE_8021QAZ_APP_SEL_ANY	4
 #define IEEE_8021QAZ_APP_SEL_DSCP       5
 
+/* Non-std selector values */
+#define DCB_APP_SEL_PCP 255
+
 /* This structure contains the IEEE 802.1Qaz APP managed object. This
  * object is also used for the CEE std as well.
  *
@@ -247,6 +250,8 @@ struct dcb_app {
 	__u16	protocol;
 };
 
+#define IEEE_8021QAZ_APP_SEL_MAX 255
+
 /**
  * struct dcb_peer_app_info - APP feature information sent by the peer
  *
@@ -425,6 +430,7 @@ enum ieee_attrs {
 enum ieee_attrs_app {
 	DCB_ATTR_IEEE_APP_UNSPEC,
 	DCB_ATTR_IEEE_APP,
+	DCB_ATTR_DCB_APP,
 	__DCB_ATTR_IEEE_APP_MAX
 };
 #define DCB_ATTR_IEEE_APP_MAX (__DCB_ATTR_IEEE_APP_MAX - 1)
diff --git a/net/dcb/dcbnl.c b/net/dcb/dcbnl.c
index dc4fb699b56c..68e033a459af 100644
--- a/net/dcb/dcbnl.c
+++ b/net/dcb/dcbnl.c
@@ -179,6 +179,57 @@ static const struct nla_policy dcbnl_featcfg_nest[DCB_FEATCFG_ATTR_MAX + 1] = {
 static LIST_HEAD(dcb_app_list);
 static DEFINE_SPINLOCK(dcb_lock);
 
+static enum ieee_attrs_app dcbnl_app_attr_type_get(u8 selector)
+{
+	switch (selector) {
+	case IEEE_8021QAZ_APP_SEL_ETHERTYPE:
+	case IEEE_8021QAZ_APP_SEL_STREAM:
+	case IEEE_8021QAZ_APP_SEL_DGRAM:
+	case IEEE_8021QAZ_APP_SEL_ANY:
+	case IEEE_8021QAZ_APP_SEL_DSCP:
+		return DCB_ATTR_IEEE_APP;
+	case DCB_APP_SEL_PCP:
+		return DCB_ATTR_DCB_APP;
+	default:
+		return DCB_ATTR_IEEE_APP_UNSPEC;
+	}
+}
+
+static bool dcbnl_app_attr_type_validate(enum ieee_attrs_app type)
+{
+	switch (type) {
+	case DCB_ATTR_IEEE_APP:
+	case DCB_ATTR_DCB_APP:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static bool dcbnl_app_selector_validate(enum ieee_attrs_app type, u32 selector)
+{
+	switch (selector) {
+	case IEEE_8021QAZ_APP_SEL_ETHERTYPE:
+	case IEEE_8021QAZ_APP_SEL_STREAM:
+	case IEEE_8021QAZ_APP_SEL_DGRAM:
+	case IEEE_8021QAZ_APP_SEL_ANY:
+	case IEEE_8021QAZ_APP_SEL_DSCP:
+		/* IEEE std selectors in IEEE std attribute */
+		if (type == DCB_ATTR_IEEE_APP)
+			return true;
+		else
+			return false;
+	case DCB_APP_SEL_PCP:
+		/* Non-std selectors in non-std attribute */
+		if (type == DCB_ATTR_DCB_APP)
+			return true;
+		else
+			return false;
+	default:
+		return false;
+	}
+}
+
 static struct sk_buff *dcbnl_newmsg(int type, u8 cmd, u32 port, u32 seq,
 				    u32 flags, struct nlmsghdr **nlhp)
 {
@@ -1116,8 +1167,9 @@ static int dcbnl_ieee_fill(struct sk_buff *skb, struct net_device *netdev)
 	spin_lock_bh(&dcb_lock);
 	list_for_each_entry(itr, &dcb_app_list, list) {
 		if (itr->ifindex == netdev->ifindex) {
-			err = nla_put(skb, DCB_ATTR_IEEE_APP, sizeof(itr->app),
-					 &itr->app);
+			enum ieee_attrs_app type =
+				dcbnl_app_attr_type_get(itr->app.selector);
+			err = nla_put(skb, type, sizeof(itr->app), &itr->app);
 			if (err) {
 				spin_unlock_bh(&dcb_lock);
 				return -EMSGSIZE;
@@ -1493,9 +1545,10 @@ static int dcbnl_ieee_set(struct net_device *netdev, struct nlmsghdr *nlh,
 		int rem;
 
 		nla_for_each_nested(attr, ieee[DCB_ATTR_IEEE_APP_TABLE], rem) {
+			enum ieee_attrs_app type = nla_type(attr);
 			struct dcb_app *app_data;
 
-			if (nla_type(attr) != DCB_ATTR_IEEE_APP)
+			if (!dcbnl_app_attr_type_validate(type))
 				continue;
 
 			if (nla_len(attr) < sizeof(struct dcb_app)) {
@@ -1504,6 +1557,11 @@ static int dcbnl_ieee_set(struct net_device *netdev, struct nlmsghdr *nlh,
 			}
 
 			app_data = nla_data(attr);
+
+			if (!dcbnl_app_selector_validate(type,
+							 app_data->selector))
+				return -EINVAL;
+
 			if (ops->ieee_setapp)
 				err = ops->ieee_setapp(netdev, app_data);
 			else
@@ -1554,11 +1612,18 @@ static int dcbnl_ieee_del(struct net_device *netdev, struct nlmsghdr *nlh,
 		int rem;
 
 		nla_for_each_nested(attr, ieee[DCB_ATTR_IEEE_APP_TABLE], rem) {
+			enum ieee_attrs_app type = nla_type(attr);
 			struct dcb_app *app_data;
 
-			if (nla_type(attr) != DCB_ATTR_IEEE_APP)
+			if (!dcbnl_app_attr_type_validate(type))
 				continue;
+
 			app_data = nla_data(attr);
+
+			if (!dcbnl_app_selector_validate(type,
+							 app_data->selector))
+				return -EINVAL;
+
 			if (ops->ieee_delapp)
 				err = ops->ieee_delapp(netdev, app_data);
 			else
