netdev - [PATCH] caif: don't set connection request param size before copying data

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Date:	Mon, 10 Jan 2011 18:36:37 -0500
From:	Dan Rosenberg <drosenberg@...curity.com>
To:	Sjur Braendeland <sjur.brandeland@...ricsson.com>,
	"David S. Miller" <davem@...emloft.net>
Cc:	netdev@...r.kernel.org
Subject: [PATCH] caif: don't set connection request param size before
 copying data

The size field should not be set until after the data is successfully
copied in.

Signed-off-by: Dan Rosenberg <drosenberg@...curity.com>
---
 net/caif/caif_socket.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/net/caif/caif_socket.c b/net/caif/caif_socket.c
index 1bf0cf5..8184c03 100644
--- a/net/caif/caif_socket.c
+++ b/net/caif/caif_socket.c
@@ -740,12 +740,12 @@ static int setsockopt(struct socket *sock,
 		if (cf_sk->sk.sk_protocol != CAIFPROTO_UTIL)
 			return -ENOPROTOOPT;
 		lock_sock(&(cf_sk->sk));
-		cf_sk->conn_req.param.size = ol;
 		if (ol > sizeof(cf_sk->conn_req.param.data) ||
 			copy_from_user(&cf_sk->conn_req.param.data, ov, ol)) {
 			release_sock(&cf_sk->sk);
 			return -EINVAL;
 		}
+		cf_sk->conn_req.param.size = ol;
 		release_sock(&cf_sk->sk);
 		return 0;
 


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