From: Thomas Graf Date: Wed, 15 Feb 2012 04:09:46 +0000 (+0000) Subject: veth: Enforce minimum size of VETH_INFO_PEER X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=237114384ab22c174ec4641e809f8e6cbcfce774;p=~shefty%2Frdma-dev.git veth: Enforce minimum size of VETH_INFO_PEER VETH_INFO_PEER carries struct ifinfomsg plus optional IFLA attributes. A minimal size of sizeof(struct ifinfomsg) must be enforced or we may risk accessing that struct beyond the limits of the netlink message. Signed-off-by: Thomas Graf Signed-off-by: David S. Miller --- diff --git a/drivers/net/veth.c b/drivers/net/veth.c index 49f4667e1fa..4a3402898f2 100644 --- a/drivers/net/veth.c +++ b/drivers/net/veth.c @@ -422,7 +422,9 @@ static void veth_dellink(struct net_device *dev, struct list_head *head) unregister_netdevice_queue(peer, head); } -static const struct nla_policy veth_policy[VETH_INFO_MAX + 1]; +static const struct nla_policy veth_policy[VETH_INFO_MAX + 1] = { + [VETH_INFO_PEER] = { .len = sizeof(struct ifinfomsg) }, +}; static struct rtnl_link_ops veth_link_ops = { .kind = DRV_NAME,