diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index 3da354af7a0a..44a465db3f96 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -1039,6 +1039,7 @@ int hid_open_report(struct hid_device *device)
 				hid_err(device, "unbalanced delimiter at end of report description\n");
 				goto err;
 			}
+			kfree(parser->collection_stack);
 			vfree(parser);
 			device->status |= HID_STAT_PARSED;
 			return 0;
@@ -1047,6 +1048,7 @@ int hid_open_report(struct hid_device *device)
 
 	hid_err(device, "item fetching failed at offset %d\n", (int)(end - start));
 err:
+	kfree(parser->collection_stack);
 	vfree(parser);
 	hid_close_report(device);
 	return ret;