diff --git a/subsys/bluetooth/host/l2cap.c b/subsys/bluetooth/host/l2cap.c
index c1ee3ecc2cfb..433eb8faef09 100644
--- a/subsys/bluetooth/host/l2cap.c
+++ b/subsys/bluetooth/host/l2cap.c
@@ -1049,8 +1049,9 @@ static void le_conn_param_rsp(struct bt_l2cap *l2cap, struct net_buf *buf)
 {
 	struct bt_l2cap_conn_param_rsp *rsp = (void *)buf->data;
 
-	if (buf->len < sizeof(*rsp)) {
-		LOG_ERR("Too small LE conn param rsp");
+	if (buf->len != sizeof(*rsp)) {
+		LOG_ERR("Invalid LE conn param rsp size (%u != %zu)",
+			buf->len, sizeof(*rsp));
 		return;
 	}
 
@@ -1066,8 +1067,9 @@ static void le_conn_param_update_req(struct bt_l2cap *l2cap, uint8_t ident,
 	struct bt_l2cap_conn_param_req *req = (void *)buf->data;
 	bool accepted;
 
-	if (buf->len < sizeof(*req)) {
-		LOG_ERR("Too small LE conn update param req");
+	if (buf->len != sizeof(*req)) {
+		LOG_ERR("Invalid LE conn update param req size (%u != %zu)",
+			buf->len, sizeof(*req));
 		return;
 	}
 
@@ -1458,8 +1460,9 @@ static void le_conn_req(struct bt_l2cap *l2cap, uint8_t ident,
 	uint16_t psm, scid, mtu, mps, credits;
 	uint16_t result;
 
-	if (buf->len < sizeof(*req)) {
-		LOG_ERR("Too small LE conn req packet size");
+	if (buf->len != sizeof(*req)) {
+		LOG_ERR("Invalid LE conn req packet size (%u != %zu)",
+			buf->len, sizeof(*req));
 		return;
 	}
 
@@ -1759,8 +1762,9 @@ static void le_ecred_reconf_rsp(struct bt_l2cap *l2cap, uint8_t ident,
 	struct bt_l2cap_le_chan *ch;
 	uint16_t result;
 
-	if (buf->len < sizeof(*rsp)) {
-		LOG_ERR("Too small ecred reconf rsp packet size");
+	if (buf->len != sizeof(*rsp)) {
+		LOG_ERR("Invalid ecred reconf rsp packet size (%u != %zu)",
+			buf->len, sizeof(*rsp));
 		return;
 	}
 
@@ -1820,8 +1824,9 @@ static void le_disconn_req(struct bt_l2cap *l2cap, uint8_t ident,
 	struct bt_l2cap_disconn_rsp *rsp;
 	uint16_t dcid;
 
-	if (buf->len < sizeof(*req)) {
-		LOG_ERR("Too small LE conn req packet size");
+	if (buf->len != sizeof(*req)) {
+		LOG_ERR("Invalid LE conn req packet size (%u != %zu)",
+			buf->len, sizeof(*req));
 		return;
 	}
 
@@ -2039,8 +2044,9 @@ static void le_conn_rsp(struct bt_l2cap *l2cap, uint8_t ident,
 	struct bt_l2cap_le_conn_rsp *rsp = (void *)buf->data;
 	uint16_t dcid, mtu, mps, credits, result;
 
-	if (buf->len < sizeof(*rsp)) {
-		LOG_ERR("Too small LE conn rsp packet size");
+	if (buf->len != sizeof(*rsp)) {
+		LOG_ERR("Invalid LE conn rsp packet size (%u != %zu)",
+			buf->len, sizeof(*rsp));
 		return;
 	}
 
@@ -2111,8 +2117,9 @@ static void le_disconn_rsp(struct bt_l2cap *l2cap, uint8_t ident,
 	struct bt_l2cap_disconn_rsp *rsp = (void *)buf->data;
 	uint16_t scid;
 
-	if (buf->len < sizeof(*rsp)) {
-		LOG_ERR("Too small LE disconn rsp packet size");
+	if (buf->len != sizeof(*rsp)) {
+		LOG_ERR("Invalid LE disconn rsp packet size (%u != %zu)",
+			buf->len, sizeof(*rsp));
 		return;
 	}
 
@@ -2137,8 +2144,9 @@ static void le_credits(struct bt_l2cap *l2cap, uint8_t ident,
 	struct bt_l2cap_le_chan *le_chan;
 	uint16_t credits, cid;
 
-	if (buf->len < sizeof(*ev)) {
-		LOG_ERR("Too small LE Credits packet size");
+	if (buf->len != sizeof(*ev)) {
+		LOG_ERR("Invalid LE Credits packet size (%u != %zu)",
+			buf->len, sizeof(*ev));
 		return;
 	}