From: Dmitry Popov <[email protected]> Date: Thu, 11 Apr 2013 00:09:09 +0400
> There is a bug in cookie_v4_check (net/ipv4/syncookies.c): > flowi4_init_output(&fl4, 0, sk->sk_mark, RT_CONN_FLAGS(sk), > RT_SCOPE_UNIVERSE, IPPROTO_TCP, > inet_sk_flowi_flags(sk), > (opt && opt->srr) ? opt->faddr : ireq->rmt_addr, > ireq->loc_addr, th->source, th->dest); > > Here we do not respect sk->sk_bound_dev_if, therefore wrong dst_entry may be > taken. This dst_entry is used in new socket (get_cookie_sock -> > tcp_v4_syn_recv_sock), so its packets may take wrong path. There is no such > bug in ipv6 code and non-cookie code (usual case). Bugfix below. > > Signed-off-by: Dmitry Popov <[email protected]> Please format your commit messages properly, by not allowing lines of text longer than 80 columns. Thank you. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
