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| author | Daniel Borkmann <dborkman@redhat.com> | 2013-06-14 18:24:05 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-06-14 15:38:36 -0700 |
| commit | 405426f6ca8ac2d8d5b1f8eb9285452d44222781 (patch) | |
| tree | 68235376e74e26192a52ced0ac7cc5f6c0b67d58 /net/sctp/sm_statefuns.c | |
| parent | f9e42b853523cda0732022c2e0473c183f7aec65 (diff) | |
| download | linux-405426f6ca8ac2d8d5b1f8eb9285452d44222781.tar.bz2 | |
net: sctp: sctp_sf_do_prm_asoc: do SCTP_CMD_INIT_CHOOSE_TRANSPORT first
While this currently cannot trigger any NULL pointer dereference in
sctp_seq_dump_local_addrs(), better change the order of commands to
prevent a future bug to happen. Although we first add SCTP_CMD_NEW_ASOC
and then set the SCTP_CMD_INIT_CHOOSE_TRANSPORT, it is okay for now,
since this primitive is only called by sctp_connect() or sctp_sendmsg()
with sctp_assoc_add_peer() set first. However, lets do this precaution
and first set the transport and then add it to the association hashlist
to prevent in future something to possibly triggering this.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sctp/sm_statefuns.c')
| -rw-r--r-- | net/sctp/sm_statefuns.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/net/sctp/sm_statefuns.c b/net/sctp/sm_statefuns.c index de1a0138317f..b3d186856513 100644 --- a/net/sctp/sm_statefuns.c +++ b/net/sctp/sm_statefuns.c @@ -4632,16 +4632,16 @@ sctp_disposition_t sctp_sf_do_prm_asoc(struct net *net, if (!repl) goto nomem; + /* Choose transport for INIT. */ + sctp_add_cmd_sf(commands, SCTP_CMD_INIT_CHOOSE_TRANSPORT, + SCTP_CHUNK(repl)); + /* Cast away the const modifier, as we want to just * rerun it through as a sideffect. */ my_asoc = (struct sctp_association *)asoc; sctp_add_cmd_sf(commands, SCTP_CMD_NEW_ASOC, SCTP_ASOC(my_asoc)); - /* Choose transport for INIT. */ - sctp_add_cmd_sf(commands, SCTP_CMD_INIT_CHOOSE_TRANSPORT, - SCTP_CHUNK(repl)); - /* After sending the INIT, "A" starts the T1-init timer and * enters the COOKIE-WAIT state. */ |