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Date: Mon, 10 Dec 2007 23:18:07 +0100 From: Thomas Graf <tgraf@...g.ch> To: davem@...emloft.net, herbert@...dor.apana.org.au Cc: netdev@...r.kernel.org Subject: [IPv6] ESP: Discard dummy packets introduced in rfc4303 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@...g.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]; } -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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