diff --git a/poky/meta/classes/cve-check.bbclass b/poky/meta/classes/cve-check.bbclass
index 0889e75..02fef7c 100644
--- a/poky/meta/classes/cve-check.bbclass
+++ b/poky/meta/classes/cve-check.bbclass
@@ -27,6 +27,7 @@
 
 CVE_CHECK_DB_DIR ?= "${DL_DIR}/CVE_CHECK"
 CVE_CHECK_DB_FILE ?= "${CVE_CHECK_DB_DIR}/nvdcve_1.1.db"
+CVE_CHECK_DB_FILE_LOCK ?= "${CVE_CHECK_DB_FILE}.lock"
 
 CVE_CHECK_LOG ?= "${T}/cve.log"
 CVE_CHECK_TMP_FILE ?= "${TMPDIR}/cve_check"
@@ -62,14 +63,15 @@
     timestamp = datetime.datetime.now().strftime('%Y%m%d%H%M%S')
     cve_summary_file = os.path.join(cvelogpath, "%s-%s.txt" % (cve_summary_name, timestamp))
 
-    shutil.copyfile(cve_tmp_file, cve_summary_file)
+    if os.path.exists(cve_tmp_file):
+        shutil.copyfile(cve_tmp_file, cve_summary_file)
 
-    if cve_summary_file and os.path.exists(cve_summary_file):
-        cvefile_link = os.path.join(cvelogpath, cve_summary_name)
+        if cve_summary_file and os.path.exists(cve_summary_file):
+            cvefile_link = os.path.join(cvelogpath, cve_summary_name)
 
-        if os.path.exists(os.path.realpath(cvefile_link)):
-            os.remove(cvefile_link)
-        os.symlink(os.path.basename(cve_summary_file), cvefile_link)
+            if os.path.exists(os.path.realpath(cvefile_link)):
+                os.remove(cvefile_link)
+            os.symlink(os.path.basename(cve_summary_file), cvefile_link)
 }
 
 addhandler cve_save_summary_handler
@@ -95,7 +97,7 @@
 }
 
 addtask cve_check before do_build after do_fetch
-do_cve_check[depends] = "cve-update-db-native:do_populate_cve_db"
+do_cve_check[depends] = "cve-update-db-native:do_fetch"
 do_cve_check[nostamp] = "1"
 
 python cve_check_cleanup () {