diff --git a/components/drivers/spi/sfud/src/sfud.c b/components/drivers/spi/sfud/src/sfud.c
index 30e0d949f1..f666b06806 100644
--- a/components/drivers/spi/sfud/src/sfud.c
+++ b/components/drivers/spi/sfud/src/sfud.c
@@ -691,7 +691,7 @@ __exit:
 static sfud_err aai_write(const sfud_flash *flash, uint32_t addr, size_t size, const uint8_t *data) {
     sfud_err result = SFUD_SUCCESS;
     const sfud_spi *spi = &flash->spi;
-    uint8_t cmd_data[6], cmd_size;
+    uint8_t cmd_data[8], cmd_size;
     bool first_write = true;
 
     SFUD_ASSERT(flash);
diff --git a/components/net/at/at_socket/at_socket.c b/components/net/at/at_socket/at_socket.c
index cccb35ae1a..054c5508c9 100644
--- a/components/net/at/at_socket/at_socket.c
+++ b/components/net/at/at_socket/at_socket.c
@@ -737,7 +737,7 @@ int at_recv(int s, void *mem, size_t len, int flags)
 
 int at_sendto(int socket, const void *data, size_t size, int flags, const struct sockaddr *to, socklen_t tolen)
 {
-    struct at_socket *sock;
+    struct at_socket *sock = RT_NULL;
     int len, result = 0;
 
     if (at_dev_ops == RT_NULL)