linux-kernel - [05/68] irda: Correctly clean up self->ias_obj on irda

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Message-Id: <20100924163344.449978921@clark.site>
Date:	Fri, 24 Sep 2010 09:31:29 -0700
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	"David S. Miller" <davem@...emloft.net>
Subject: [05/68] irda: Correctly clean up self->ias_obj on irda_bind() failure.

2.6.32-stable review patch.  If anyone has any objections, please let us know.

------------------


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

[ Upstream commit 628e300cccaa628d8fb92aa28cb7530a3d5f2257 ]

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: Greg Kroah-Hartman <gregkh@...e.de>
---
 net/irda/af_irda.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/net/irda/af_irda.c
+++ b/net/irda/af_irda.c
@@ -810,8 +810,8 @@ static int irda_bind(struct socket *sock
 
 	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;
 		return err;
 	}
 


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