* [IPv6] ESP: Discard dummy packets introduced in rfc4303
@ 2007-12-10 22:18 Thomas Graf
2007-12-11 0:54 ` David Miller
0 siblings, 1 reply; 2+ messages in thread
From: Thomas Graf @ 2007-12-10 22:18 UTC (permalink / raw)
To: davem, herbert; +Cc: netdev
RFC4303 introduces dummy packets with a nexthdr value of 59
to implement traffic confidentiality. Such packets need to
be dropped silently and the payload may not be attempted to
be parsed as it consists of random chunk.
Signed-off-by: Thomas Graf <tgraf@suug.ch>
Index: net-2.6.25/net/ipv6/esp6.c
===================================================================
--- net-2.6.25.orig/net/ipv6/esp6.c 2007-12-10 16:06:02.000000000 +0100
+++ net-2.6.25/net/ipv6/esp6.c 2007-12-10 16:08:02.000000000 +0100
@@ -238,6 +238,12 @@
}
/* ... check padding bits here. Silly. :-) */
+ /* RFC4303: Drop dummy packets without any error */
+ if (nexthdr[1] == IPPROTO_NONE) {
+ ret = -EINVAL;
+ goto out;
+ }
+
pskb_trim(skb, skb->len - alen - padlen - 2);
ret = nexthdr[1];
}
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [IPv6] ESP: Discard dummy packets introduced in rfc4303
2007-12-10 22:18 [IPv6] ESP: Discard dummy packets introduced in rfc4303 Thomas Graf
@ 2007-12-11 0:54 ` David Miller
0 siblings, 0 replies; 2+ messages in thread
From: David Miller @ 2007-12-11 0:54 UTC (permalink / raw)
To: tgraf; +Cc: herbert, netdev
From: Thomas Graf <tgraf@suug.ch>
Date: Mon, 10 Dec 2007 23:18:07 +0100
> RFC4303 introduces dummy packets with a nexthdr value of 59
> to implement traffic confidentiality. Such packets need to
> be dropped silently and the payload may not be attempted to
> be parsed as it consists of random chunk.
>
> Signed-off-by: Thomas Graf <tgraf@suug.ch>
Also applied to net-2.6, thanks Thomas.
^ permalink raw reply [flat|nested] 2+ messages in thread
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