diff options
| author | Andrii Vladyka <tulup@mail.ru> | 2017-10-18 16:23:44 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-10-20 14:42:50 +0200 |
| commit | d67dc3a40278569c2c6f0e6acddf0bfe06af9e6a (patch) | |
| tree | 30be41ea6ebeb8eac2db237aa2eca1fa6a2d8075 /drivers/staging/gdm724x | |
| parent | 3de1abef24a221880614e387e150c1fc7004bc23 (diff) | |
staging: gdm724x: check for skb->len in gdm_lte_emulate_arp
check for skb->len in gdm_lte_emulate_arp in gdm724x driver
Signed-off-by: Andrii Vladyka <tulup@mail.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/gdm724x')
| -rw-r--r-- | drivers/staging/gdm724x/gdm_lte.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/staging/gdm724x/gdm_lte.c b/drivers/staging/gdm724x/gdm_lte.c index 9ab6ce231f11..066b14ecc366 100644 --- a/drivers/staging/gdm724x/gdm_lte.c +++ b/drivers/staging/gdm724x/gdm_lte.c @@ -26,6 +26,7 @@ #include <linux/icmp.h> #include <linux/icmpv6.h> #include <linux/uaccess.h> +#include <linux/errno.h> #include <net/ndisc.h> #include "gdm_lte.h" @@ -118,6 +119,10 @@ static int gdm_lte_emulate_arp(struct sk_buff *skb_in, u32 nic_type) void *mac_header_data; u32 mac_header_len; + /* Check for skb->len, discard if empty */ + if (skb_in->len == 0) + return -ENODATA; + /* Format the mac header so that it can be put to skb */ if (ntohs(((struct ethhdr *)skb_in->data)->h_proto) == ETH_P_8021Q) { memcpy(&vlan_eth, skb_in->data, sizeof(struct vlan_ethhdr)); |