[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>

1 files changed, 3 insertions, 1 deletions

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;