commit a27b58fed90cc5654e2daf1d292cc5bc61be4dd7
author Heiko Carstens <heiko.carstens@de.ibm.com> Mon Oct 30 15:06:12 2006 -0800
committer David S. Miller <davem@sunset.davemloft.net> Mon Oct 30 15:24:41 2006 -0800
tree 4f01c7b0bc168b9a73cd9d5406e7fbf426ab169c
parent 28cd7752734563d5b0967b96a6bade7a1dc89c7f

[NET]: fix uaccess handling

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/netlink/af_netlink.c

diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index d56e0d2..d527c89 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -1075,8 +1075,9 @@
 			return -EINVAL;
 		len = sizeof(int);
 		val = nlk->flags & NETLINK_RECV_PKTINFO ? 1 : 0;
-		put_user(len, optlen);
-		put_user(val, optval);
+		if (put_user(len, optlen) ||
+		    put_user(val, optval))
+			return -EFAULT;
 		err = 0;
 		break;
 	default: