netdev - [PATCH] Fix pppol2tp getsockname()

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-next>] [day] [month] [year] [list]

Message-ID: <20120319031534.GC11293@kvack.org>
Date:	Sun, 18 Mar 2012 23:15:34 -0400
From:	Benjamin LaHaise <bcrl@...ck.org>
To:	"David S. Miller" <davem@...emloft.net>
Cc:	James Chapman <jchapman@...alix.com>, netdev@...r.kernel.org
Subject: [PATCH] Fix pppol2tp getsockname()


While testing L2TP functionality, I came across a bug in getsockname().  The
IP address returned within the pppol2tp_addr's addr memember was not being
set to the IP address in use.  This bug is caused by using inet_sk() on the
wrong socket (the L2TP socket rather than the underlying UDP socket), and was
likely introduced during the addition of L2TPv3 support.
---
 net/l2tp/l2tp_ppp.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/net/l2tp/l2tp_ppp.c b/net/l2tp/l2tp_ppp.c
index 96bc7a6..9b07191 100644
--- a/net/l2tp/l2tp_ppp.c
+++ b/net/l2tp/l2tp_ppp.c
@@ -915,7 +915,7 @@ static int pppol2tp_getname(struct socket *sock, struct sockaddr *uaddr,
 		goto end_put_sess;
 	}
 
-	inet = inet_sk(sk);
+	inet = inet_sk(tunnel->sock);
 	if (tunnel->version == 2) {
 		struct sockaddr_pppol2tp sp;
 		len = sizeof(sp);
-- 
1.7.4.1

--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html