linux-kernel - [PATCH 156/173] econet: Fix crash in aun

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20110425200239.771785194@pcw.home.local>
Date:	Mon, 25 Apr 2011 22:05:08 +0200
From:	Willy Tarreau <w@....eu>
To:	linux-kernel@...r.kernel.org, stable@...nel.org,
	stable-review@...nel.org
Cc:	"David S. Miller" <davem@...emloft.net>,
	Moritz Muehlenhoff <jmm@...ian.org>,
	Greg Kroah-Hartman <gregkh@...e.de>
Subject: [PATCH 156/173] econet: Fix crash in aun_incoming().

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

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

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

commit 4e085e76cbe558b79b54cbab772f61185879bc64 upstream.

Unconditional use of skb->dev won't work here,
try to fetch the econet device via skb_dst()->dev
instead.

Suggested by Eric Dumazet.

Reported-by: Nelson Elhage <nelhage@...lice.com>
Tested-by: Nelson Elhage <nelhage@...lice.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Cc: Moritz Muehlenhoff <jmm@...ian.org>
[jmm: Slightly adapted for 2.6.32]
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 net/econet/af_econet.c |    6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

Index: longterm-2.6.27/net/econet/af_econet.c
===================================================================
--- longterm-2.6.27.orig/net/econet/af_econet.c	2011-04-25 18:51:48.591279239 +0200
+++ longterm-2.6.27/net/econet/af_econet.c	2011-04-25 18:59:35.943279187 +0200
@@ -845,9 +845,13 @@
 {
 	struct iphdr *ip = ip_hdr(skb);
 	unsigned char stn = ntohl(ip->saddr) & 0xff;
+	struct dst_entry *dst = skb->dst;
+	struct ec_device *edev = NULL;
 	struct sock *sk;
 	struct sk_buff *newskb;
-	struct ec_device *edev = skb->dev->ec_ptr;
+
+	if (dst)
+		edev = dst->dev->ec_ptr;
 
 	if (! edev)
 		goto bad;


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/