| From stable-bounces@linux.kernel.org Tue Jan 10 13:19:27 2006 |
| Date: Tue, 10 Jan 2006 13:13:45 -0800 (PST) |
| Message-Id: <20060110.131345.37717560.davem@davemloft.net> |
| To: stable@kernel.org |
| From: "David S. Miller" <davem@davemloft.net> |
| Subject: [EBTABLES] Don't match tcp/udp source/destination port for IP fragments |
| |
| From: Bart De Schuymer <bdschuym@pandora.be> |
| |
| Signed-off-by: Bart De Schuymer <bdschuym@pandora.be> |
| Signed-off-by: David S. Miller <davem@davemloft.net> |
| Signed-off-by: Chris Wright <chrisw@sous-sol.org> |
| Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> |
| --- |
| net/bridge/netfilter/ebt_ip.c | 3 +++ |
| 1 file changed, 3 insertions(+) |
| |
| --- linux-2.6.14.6.orig/net/bridge/netfilter/ebt_ip.c |
| +++ linux-2.6.14.6/net/bridge/netfilter/ebt_ip.c |
| @@ -15,6 +15,7 @@ |
| #include <linux/netfilter_bridge/ebtables.h> |
| #include <linux/netfilter_bridge/ebt_ip.h> |
| #include <linux/ip.h> |
| +#include <net/ip.h> |
| #include <linux/in.h> |
| #include <linux/module.h> |
| |
| @@ -51,6 +52,8 @@ static int ebt_filter_ip(const struct sk |
| if (!(info->bitmask & EBT_IP_DPORT) && |
| !(info->bitmask & EBT_IP_SPORT)) |
| return EBT_MATCH; |
| + if (ntohs(ih->frag_off) & IP_OFFSET) |
| + return EBT_NOMATCH; |
| pptr = skb_header_pointer(skb, ih->ihl*4, |
| sizeof(_ports), &_ports); |
| if (pptr == NULL) |
