diff --git a/drivers/net/caif/caif_spi.c b/drivers/net/caif/caif_spi.c
index 6c948037fc78af607eb64c0a40fae04d60cd5d78..f5058ff2b210da07dd1411bdd8a12f1dafe9ddb2 100644
--- a/drivers/net/caif/caif_spi.c
+++ b/drivers/net/caif/caif_spi.c
@@ -165,6 +165,9 @@ static ssize_t dbgfs_state(struct file *file, char __user *user_buf,
 	len += snprintf((buf + len), (DEBUGFS_BUF_SIZE - len),
 			"Next RX len: %d\n", cfspi->rx_npck_len);
 
+	if (len > DEBUGFS_BUF_SIZE)
+		len = DEBUGFS_BUF_SIZE;
+
 	size = simple_read_from_buffer(user_buf, count, ppos, buf, len);
 	kfree(buf);