From: Yufeng Mo <moyufeng@huawei.com>
Date: Wed, 15 Sep 2021 21:52:09 +0800
Subject: net: hns3: check queue id range before using
Patch-mainline: v5.15-rc3
Git-commit: 63b1279d9905100a14da9e043de7b28e99dba3f8
References: bsc#1190336 stable-5.14.9

The input parameters may not be reliable. Before using the
queue id, we should check this parameter. Otherwise, memory
overwriting may occur.

Fixes: d34100184685 ("net: hns3: refactor the mailbox message between PF and VF")
Signed-off-by: Yufeng Mo <moyufeng@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c |    8 ++++++++
 1 file changed, 8 insertions(+)

--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c
@@ -590,9 +590,17 @@ static void hclge_get_queue_id_in_pf(str
 				     struct hclge_mbx_vf_to_pf_cmd *mbx_req,
 				     struct hclge_respond_to_vf_msg *resp_msg)
 {
+	struct hnae3_handle *handle = &vport->nic;
+	struct hclge_dev *hdev = vport->back;
 	u16 queue_id, qid_in_pf;
 
 	memcpy(&queue_id, mbx_req->msg.data, sizeof(queue_id));
+	if (queue_id >= handle->kinfo.num_tqps) {
+		dev_err(&hdev->pdev->dev, "Invalid queue id(%u) from VF %u\n",
+			queue_id, mbx_req->mbx_src_vfid);
+		return;
+	}
+
 	qid_in_pf = hclge_covert_handle_qid_global(&vport->nic, queue_id);
 	memcpy(resp_msg->data, &qid_in_pf, sizeof(qid_in_pf));
 	resp_msg->len = sizeof(qid_in_pf);