diff --git a/components/bt/esp_ble_mesh/mesh_common/include/mesh_buf.h b/components/bt/esp_ble_mesh/mesh_common/include/mesh_buf.h
index e6e31ae93d..e325695890 100644
--- a/components/bt/esp_ble_mesh/mesh_common/include/mesh_buf.h
+++ b/components/bt/esp_ble_mesh/mesh_common/include/mesh_buf.h
@@ -168,6 +168,19 @@ static inline void net_buf_simple_reset(struct net_buf_simple *buf)
     buf->data = buf->__buf;
 }
 
+/**
+ * Clone buffer state, using the same data buffer.
+ *
+ * Initializes a buffer to point to the same data as an existing buffer.
+ * Allows operations on the same data without altering the length and
+ * offset of the original.
+ *
+ * @param original Buffer to clone.
+ * @param clone The new clone.
+ */
+void net_buf_simple_clone(const struct net_buf_simple *original,
+                          struct net_buf_simple *clone);
+
 /**
  * @brief Prepare data to be added at the end of the buffer
  *
diff --git a/components/bt/esp_ble_mesh/mesh_common/mesh_buf.c b/components/bt/esp_ble_mesh/mesh_common/mesh_buf.c
index 09198491b3..2cb31d6d56 100644
--- a/components/bt/esp_ble_mesh/mesh_common/mesh_buf.c
+++ b/components/bt/esp_ble_mesh/mesh_common/mesh_buf.c
@@ -31,6 +31,12 @@ static inline struct net_buf *pool_get_uninit(struct net_buf_pool *pool,
     return buf;
 }
 
+void net_buf_simple_clone(const struct net_buf_simple *original,
+                          struct net_buf_simple *clone)
+{
+    memcpy(clone, original, sizeof(struct net_buf_simple));
+}
+
 void *net_buf_simple_add(struct net_buf_simple *buf, size_t len)
 {
     u8_t *tail = net_buf_simple_tail(buf);
diff --git a/components/bt/esp_ble_mesh/mesh_core/friend.c b/components/bt/esp_ble_mesh/mesh_core/friend.c
index 2531e4171e..880b123e63 100644
--- a/components/bt/esp_ble_mesh/mesh_core/friend.c
+++ b/components/bt/esp_ble_mesh/mesh_core/friend.c
@@ -384,12 +384,11 @@ static int unseg_app_sdu_decrypt(struct bt_mesh_friend *frnd,
                                  struct net_buf *buf,
                                  const struct unseg_app_sdu_meta *meta)
 {
-    struct net_buf_simple sdu = {
-        .len = buf->len - 14,
-        .data = &buf->data[10],
-        .__buf = &buf->data[10],
-        .size = buf->len - 10,
-    };
+    struct net_buf_simple sdu;
+
+    net_buf_simple_clone(&buf->b, &sdu);
+    net_buf_simple_pull(&sdu, 10);
+    sdu.len -= 4;
 
     return bt_mesh_app_decrypt(meta->key, meta->is_dev_key, 0, &sdu, &sdu,
                                meta->ad, meta->net.ctx.addr,
@@ -401,12 +400,11 @@ static int unseg_app_sdu_encrypt(struct bt_mesh_friend *frnd,
                                  struct net_buf *buf,
                                  const struct unseg_app_sdu_meta *meta)
 {
-    struct net_buf_simple sdu = {
-        .len = buf->len - 14,
-        .data = &buf->data[10],
-        .__buf = &buf->data[10],
-        .size = buf->len - 10,
-    };
+    struct net_buf_simple sdu;
+
+    net_buf_simple_clone(&buf->b, &sdu);
+    net_buf_simple_pull(&sdu, 10);
+    sdu.len -= 4;
 
     return bt_mesh_app_encrypt(meta->key, meta->is_dev_key, 0, &sdu,
                                meta->ad, meta->net.ctx.addr,