netlink: make sure nladdr has correct size in netlink_connect()

[pandora-kernel.git] / net / netlink / af_netlink.c

diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index 2369e96..d1017ad 100644 (file)
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -706,6 +706,9 @@ static int netlink_connect(struct socket *sock, struct sockaddr *addr,
        if (addr->sa_family != AF_NETLINK)
                return -EINVAL;
 
+       if (alen < sizeof(struct sockaddr_nl))
+               return -EINVAL;
+
        /* Only superuser is allowed to send multicasts */
        if (nladdr->nl_groups && !netlink_capable(sock, NL_NONROOT_SEND))
                return -EPERM;