From 532cfc0df1e4d68e74522ef4a0dcbf6ebbe68287 Mon Sep 17 00:00:00 2001 From: Yufeng Mo Date: Tue, 9 Feb 2021 17:03:07 +0800 Subject: net: hns3: add a check for index in hclge_get_rss_key() The index is received from vf, if use it directly, an out-of-bound issue may be caused, so add a check for this index before using it in hclge_get_rss_key(). Fixes: a638b1d8cc87 ("net: hns3: fix get VF RSS issue") Signed-off-by: Yufeng Mo Signed-off-by: Huazhong Tan Signed-off-by: David S. Miller --- drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'drivers') diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c index ea2dea990283..ffb416e088a9 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c @@ -607,6 +607,17 @@ static void hclge_get_rss_key(struct hclge_vport *vport, index = mbx_req->msg.data[0]; + /* Check the query index of rss_hash_key from VF, make sure no + * more than the size of rss_hash_key. + */ + if (((index + 1) * HCLGE_RSS_MBX_RESP_LEN) > + sizeof(vport[0].rss_hash_key)) { + dev_warn(&hdev->pdev->dev, + "failed to get the rss hash key, the index(%u) invalid !\n", + index); + return; + } + memcpy(resp_msg->data, &hdev->vport[0].rss_hash_key[index * HCLGE_RSS_MBX_RESP_LEN], HCLGE_RSS_MBX_RESP_LEN); -- cgit