diff options
Diffstat (limited to 'drivers/staging/gdm724x')
-rw-r--r-- | drivers/staging/gdm724x/gdm_lte.c | 25 | ||||
-rw-r--r-- | drivers/staging/gdm724x/gdm_usb.c | 10 |
2 files changed, 25 insertions, 10 deletions
diff --git a/drivers/staging/gdm724x/gdm_lte.c b/drivers/staging/gdm724x/gdm_lte.c index 3c2aab7a921e..eb6046087a91 100644 --- a/drivers/staging/gdm724x/gdm_lte.c +++ b/drivers/staging/gdm724x/gdm_lte.c @@ -76,14 +76,15 @@ static void tx_complete(void *arg) static int gdm_lte_rx(struct sk_buff *skb, struct nic *nic, int nic_type) { - int ret; + int ret, len; + len = skb->len + ETH_HLEN; ret = netif_rx_ni(skb); if (ret == NET_RX_DROP) { nic->stats.rx_dropped++; } else { nic->stats.rx_packets++; - nic->stats.rx_bytes += skb->len + ETH_HLEN; + nic->stats.rx_bytes += len; } return 0; @@ -611,10 +612,12 @@ static void gdm_lte_netif_rx(struct net_device *dev, char *buf, * bytes (99,130,83,99 dec) */ } __packed; - void *addr = buf + sizeof(struct iphdr) + - sizeof(struct udphdr) + - offsetof(struct dhcp_packet, chaddr); - ether_addr_copy(nic->dest_mac_addr, addr); + int offset = sizeof(struct iphdr) + + sizeof(struct udphdr) + + offsetof(struct dhcp_packet, chaddr); + if (offset + ETH_ALEN > len) + return; + ether_addr_copy(nic->dest_mac_addr, buf + offset); } } @@ -677,6 +680,7 @@ static void gdm_lte_multi_sdu_pkt(struct phy_dev *phy_dev, char *buf, int len) struct sdu *sdu = NULL; u8 endian = phy_dev->get_endian(phy_dev->priv_dev); u8 *data = (u8 *)multi_sdu->data; + int copied; u16 i = 0; u16 num_packet; u16 hci_len; @@ -688,6 +692,12 @@ static void gdm_lte_multi_sdu_pkt(struct phy_dev *phy_dev, char *buf, int len) num_packet = gdm_dev16_to_cpu(endian, multi_sdu->num_packet); for (i = 0; i < num_packet; i++) { + copied = data - multi_sdu->data; + if (len < copied + sizeof(*sdu)) { + pr_err("rx prevent buffer overflow"); + return; + } + sdu = (struct sdu *)data; cmd_evt = gdm_dev16_to_cpu(endian, sdu->cmd_evt); @@ -698,7 +708,8 @@ static void gdm_lte_multi_sdu_pkt(struct phy_dev *phy_dev, char *buf, int len) pr_err("rx sdu wrong hci %04x\n", cmd_evt); return; } - if (hci_len < 12) { + if (hci_len < 12 || + len < copied + sizeof(*sdu) + (hci_len - 12)) { pr_err("rx sdu invalid len %d\n", hci_len); return; } diff --git a/drivers/staging/gdm724x/gdm_usb.c b/drivers/staging/gdm724x/gdm_usb.c index dc4da66c3695..54bdb64f52e8 100644 --- a/drivers/staging/gdm724x/gdm_usb.c +++ b/drivers/staging/gdm724x/gdm_usb.c @@ -56,20 +56,24 @@ static int gdm_usb_recv(void *priv_dev, static int request_mac_address(struct lte_udev *udev) { - u8 buf[16] = {0,}; - struct hci_packet *hci = (struct hci_packet *)buf; + struct hci_packet *hci; struct usb_device *usbdev = udev->usbdev; int actual; int ret = -1; + hci = kmalloc(struct_size(hci, data, 1), GFP_KERNEL); + if (!hci) + return -ENOMEM; + hci->cmd_evt = gdm_cpu_to_dev16(udev->gdm_ed, LTE_GET_INFORMATION); hci->len = gdm_cpu_to_dev16(udev->gdm_ed, 1); hci->data[0] = MAC_ADDRESS; - ret = usb_bulk_msg(usbdev, usb_sndbulkpipe(usbdev, 2), buf, 5, + ret = usb_bulk_msg(usbdev, usb_sndbulkpipe(usbdev, 2), hci, 5, &actual, 1000); udev->request_mac_addr = 1; + kfree(hci); return ret; } |