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| author | Jian Shen <shenjian15@huawei.com> | 2022-04-24 20:57:24 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-04-25 10:48:49 +0100 |
| commit | 7d413735cb18ff73aaba3457b16b08332e8d3cc4 (patch) | |
| tree | 4601c96330ca1e61d0b6deedd35224abd1f13ce2 /drivers | |
| parent | 48009e9972974c52a5f649f761862dd67bce3d13 (diff) | |
| download | linux-7d413735cb18ff73aaba3457b16b08332e8d3cc4.tar.bz2 | |
net: hns3: add validity check for message data length
Add validity check for message data length in function
hclge_send_mbx_msg(), avoid unexpected overflow.
Fixes: dde1a86e93ca ("net: hns3: Add mailbox support to PF driver")
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c index 36cbafc5f944..53f939923c28 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c @@ -94,6 +94,13 @@ static int hclge_send_mbx_msg(struct hclge_vport *vport, u8 *msg, u16 msg_len, enum hclge_comm_cmd_status status; struct hclge_desc desc; + if (msg_len > HCLGE_MBX_MAX_MSG_SIZE) { + dev_err(&hdev->pdev->dev, + "msg data length(=%u) exceeds maximum(=%u)\n", + msg_len, HCLGE_MBX_MAX_MSG_SIZE); + return -EMSGSIZE; + } + resp_pf_to_vf = (struct hclge_mbx_pf_to_vf_cmd *)desc.data; hclge_cmd_setup_basic_desc(&desc, HCLGEVF_OPC_MBX_PF_TO_VF, false); |