diff --git a/src/hb-repacker.hh b/src/hb-repacker.hh
index 3accabb11..6211dedb9 100644
--- a/src/hb-repacker.hh
+++ b/src/hb-repacker.hh
@@ -227,10 +227,10 @@ struct graph_t
     hb_vector_t<unsigned> queue;
     hb_vector_t<vertex_t> sorted_graph;
     hb_vector_t<unsigned> id_map;
-    check_success (id_map.resize (vertices_.length));
+    if (unlikely (!check_success (id_map.resize (vertices_.length)))) return;
 
     hb_vector_t<unsigned> removed_edges;
-    check_success (removed_edges.resize (vertices_.length));
+    if (unlikely (!check_success (removed_edges.resize (vertices_.length)))) return;
     update_incoming_edge_count ();
 
     queue.push (root_idx ());
@@ -284,10 +284,10 @@ struct graph_t
     hb_priority_queue_t queue;
     hb_vector_t<vertex_t> sorted_graph;
     hb_vector_t<unsigned> id_map;
-    check_success (id_map.resize (vertices_.length));
+    if (unlikely (!check_success (id_map.resize (vertices_.length)))) return;
 
     hb_vector_t<unsigned> removed_edges;
-    check_success (removed_edges.resize (vertices_.length));
+    if (unlikely (!check_success (removed_edges.resize (vertices_.length)))) return;
     update_incoming_edge_count ();
 
     queue.insert (root ().modified_distance (0), root_idx ());
diff --git a/test/fuzzing/fonts/clusterfuzz-testcase-minimized-hb-subset-fuzzer-5609112151916544 b/test/fuzzing/fonts/clusterfuzz-testcase-minimized-hb-subset-fuzzer-5609112151916544
new file mode 100644
index 000000000..0a9ce89d9
Binary files /dev/null and b/test/fuzzing/fonts/clusterfuzz-testcase-minimized-hb-subset-fuzzer-5609112151916544 differ