diff options
| -rw-r--r-- | net/ipv4/netfilter/ipt_REDIRECT.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/net/ipv4/netfilter/ipt_REDIRECT.c b/net/ipv4/netfilter/ipt_REDIRECT.c index d2e13447678e..715cb613405c 100644 --- a/net/ipv4/netfilter/ipt_REDIRECT.c +++ b/net/ipv4/netfilter/ipt_REDIRECT.c @@ -88,14 +88,18 @@ redirect_target(struct sk_buff **pskb, newdst = htonl(0x7F000001); else { struct in_device *indev; + struct in_ifaddr *ifa; - /* Device might not have an associated in_device. */ - indev = (struct in_device *)(*pskb)->dev->ip_ptr; - if (indev == NULL || indev->ifa_list == NULL) - return NF_DROP; + newdst = 0; + + rcu_read_lock(); + indev = __in_dev_get((*pskb)->dev); + if (indev && (ifa = indev->ifa_list)) + newdst = ifa->ifa_local; + rcu_read_unlock(); - /* Grab first address on interface. */ - newdst = indev->ifa_list->ifa_local; + if (!newdst) + return NF_DROP; } /* Transfer from original range. */ |