5.15-stable review patch. If anyone has any objections, please let me know.
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From: Jian Shen shenjian15@huawei.com
[ Upstream commit 4e2969a0d6a7549bc0bc1ebc990588b622c4443d ]
Add checking for vf id of mailbox, in order to avoid array out-of-bounds risk.
Signed-off-by: Jian Shen shenjian15@huawei.com Signed-off-by: Jijie Shao shaojijie@huawei.com Reviewed-by: Sunil Goutham sgoutham@marvell.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c index 77c432ab7856c..e2fe41d3972fb 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c @@ -1066,10 +1066,11 @@ void hclge_mbx_handler(struct hclge_dev *hdev) req = (struct hclge_mbx_vf_to_pf_cmd *)desc->data;
flag = le16_to_cpu(crq->desc[crq->next_to_use].flag); - if (unlikely(!hnae3_get_bit(flag, HCLGE_CMDQ_RX_OUTVLD_B))) { + if (unlikely(!hnae3_get_bit(flag, HCLGE_CMDQ_RX_OUTVLD_B) || + req->mbx_src_vfid > hdev->num_req_vfs)) { dev_warn(&hdev->pdev->dev, - "dropped invalid mailbox message, code = %u\n", - req->msg.code); + "dropped invalid mailbox message, code = %u, vfid = %u\n", + req->msg.code, req->mbx_src_vfid);
/* dropping/not processing this invalid message */ crq->desc[crq->next_to_use].flag = 0;