irda: Correctly clean up self->ias_obj on irda_bind() failure.

If irda_open_tsap() fails, the irda_bind() code tries to destroy
the ->ias_obj object by hand, but does so wrongly.

In particular, it fails to a) release the hashbin attached to the
object and b) reset the self->ias_obj pointer to NULL.

Fix both problems by using irias_delete_object() and explicitly
setting self->ias_obj to NULL, just as irda_release() does.

Reported-by: Tavis Ormandy <taviso@cmpxchg8b.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/irda/af_irda.c b/net/irda/af_irda.c
index 79986a674f6ea23329fb5a3960f1d3ece82b9a9d..fd55b5135de5aad91f547281a9c7a07c44f676b0 100644 (file)
--- a/net/irda/af_irda.c
+++ b/net/irda/af_irda.c
@@ -824,8 +824,8 @@ static int irda_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
 
        err = irda_open_tsap(self, addr->sir_lsap_sel, addr->sir_name);
        if (err < 0) {
-               kfree(self->ias_obj->name);
-               kfree(self->ias_obj);
+               irias_delete_object(self->ias_obj);
+               self->ias_obj = NULL;
                goto out;
        }