diff --git a/WHATS_NEW b/WHATS_NEW
index 500b4eb55..c2cad9f33 100644
--- a/WHATS_NEW
+++ b/WHATS_NEW
@@ -1,5 +1,6 @@
 Version 2.02.34 -
 ===================================
+  Add check to vg_commit() ensuring VG lock held before writing new VG metadata.
   Add validation of LV name to pvmove -n.
   Make clvmd refresh the context correctly when lvm.conf is updated.
   Add some basic internal VG lock validation.
diff --git a/lib/metadata/metadata.c b/lib/metadata/metadata.c
index 374501963..0abd5a57e 100644
--- a/lib/metadata/metadata.c
+++ b/lib/metadata/metadata.c
@@ -1316,6 +1316,12 @@ int vg_commit(struct volume_group *vg)
 	int cache_updated = 0;
 	int failed = 0;
 
+	if (!vgname_is_locked(vg->name)) {
+		log_error("Internal error: Attempt to write new VG metadata "
+			  "without locking %s", vg->name);
+		return cache_updated;
+	}
+
 	/* Commit to each copy of the metadata area */
 	list_iterate_items(mda, &vg->fid->metadata_areas) {
 		failed = 0;