linux-kernel - [34-longterm 112/260] irda: Correctly clean up self->ias_obj on irda

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Date:	Sun,  2 Jan 2011 02:16:48 -0500
From:	Paul Gortmaker <paul.gortmaker@...driver.com>
To:	stable@...nel.org, linux-kernel@...r.kernel.org
Cc:	stable-review@...nel.org, "David S. Miller" <davem@...emloft.net>,
	Paul Gortmaker <paul.gortmaker@...driver.com>
Subject: [34-longterm 112/260] irda: Correctly clean up self->ias_obj on irda_bind() failure.

From: David S. Miller <davem@...emloft.net>

commit 628e300cccaa628d8fb92aa28cb7530a3d5f2257 upstream.

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@...xchg8b.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Paul Gortmaker <paul.gortmaker@...driver.com>
---
 net/irda/af_irda.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/irda/af_irda.c b/net/irda/af_irda.c
index 2a4efce..6fae047 100644
--- 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;
 	}
 
-- 
1.7.3.3

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