From: Al Viro <viro@zeniv.linux.org.uk>
Date: Tue, 21 Nov 2006 01:02:22 +0000 (-0800)
Subject: [SCTP] bug: sctp_assoc_lookup_laddr() is broken with ipv6.
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=39940a48c42441da5e7428483ac515e822d52b1d;p=openwrt%2Fstaging%2Fblogic.git

[SCTP] bug: sctp_assoc_lookup_laddr() is broken with ipv6.

It expects (and gets) laddr with net-endian sin_port.  And then it calls
sctp_bind_addr_match(), which *does* care about port numbers in case of
ipv6 and expects them to be host-endian.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/sctp/associola.c b/net/sctp/associola.c
index a5d7abba89e4..7639044b0074 100644
--- a/net/sctp/associola.c
+++ b/net/sctp/associola.c
@@ -1335,10 +1335,12 @@ int sctp_assoc_lookup_laddr(struct sctp_association *asoc,
 			    const union sctp_addr *laddr)
 {
 	int found;
+	union sctp_addr tmp;
 
+	flip_to_h(&tmp, laddr);
 	sctp_read_lock(&asoc->base.addr_lock);
 	if ((asoc->base.bind_addr.port == ntohs(laddr->v4.sin_port)) &&
-	    sctp_bind_addr_match(&asoc->base.bind_addr, laddr,
+	    sctp_bind_addr_match(&asoc->base.bind_addr, &tmp,
 			         sctp_sk(asoc->base.sk))) {
 		found = 1;
 		goto out;