diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c
index 6fdc7ecdaca0..9acb84983bd9 100644
--- a/drivers/infiniband/core/uverbs_cmd.c
+++ b/drivers/infiniband/core/uverbs_cmd.c
@@ -3655,6 +3655,11 @@ int ib_uverbs_ex_query_device(struct ib_uverbs_file *file,
 	resp.hca_core_clock = attr.hca_core_clock;
 	resp.response_length += sizeof(resp.hca_core_clock);
 
+	if (ucore->outlen < resp.response_length + sizeof(resp.device_cap_flags_ex))
+		goto end;
+
+	resp.device_cap_flags_ex = attr.device_cap_flags;
+	resp.response_length += sizeof(resp.device_cap_flags_ex);
 end:
 	err = ib_copy_to_udata(ucore, &resp, resp.response_length);
 	return err;
diff --git a/include/uapi/rdma/ib_user_verbs.h b/include/uapi/rdma/ib_user_verbs.h
index 8126c143a519..b6543d73d20a 100644
--- a/include/uapi/rdma/ib_user_verbs.h
+++ b/include/uapi/rdma/ib_user_verbs.h
@@ -226,6 +226,7 @@ struct ib_uverbs_ex_query_device_resp {
 	struct ib_uverbs_odp_caps odp_caps;
 	__u64 timestamp_mask;
 	__u64 hca_core_clock; /* in KHZ */
+	__u64 device_cap_flags_ex;
 };
 
 struct ib_uverbs_query_port {