diff options
| author | Karthikeyan Ramasubramanian <kramasub@codeaurora.org> | 2016-02-22 16:30:40 -0700 |
|---|---|---|
| committer | David Keitel <dkeitel@codeaurora.org> | 2016-03-23 21:21:07 -0700 |
| commit | 460ee82ee6bc1f829bdb902841518a6eab8a9323 (patch) | |
| tree | f301581aea682ac50e2872bb99ec02fb03dd80d2 | |
| parent | 48b1cf8d915ab85d0f97e5ad9445c0deabe1f876 (diff) | |
net: ipc_router: Bind only a client port as control port
IPC Router binds any port as a control port and moves it from the client
port list to control port list. Misbehaving clients can exploit this
incorrect behavior.
IPC Router to check if the port is a client port before binding it as a
control port.
CRs-Fixed: 974577
Change-Id: I9f189b76967d5f85750218a7cb6537d187a69663
Signed-off-by: Karthikeyan Ramasubramanian <kramasub@codeaurora.org>
| -rw-r--r-- | net/ipc_router/ipc_router_core.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/ipc_router/ipc_router_core.c b/net/ipc_router/ipc_router_core.c index 99486e9ac703..3100ebde7021 100644 --- a/net/ipc_router/ipc_router_core.c +++ b/net/ipc_router/ipc_router_core.c @@ -1,4 +1,4 @@ -/* Copyright (c) 2011-2015, The Linux Foundation. All rights reserved. +/* Copyright (c) 2011-2016, The Linux Foundation. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 and @@ -3532,7 +3532,7 @@ int msm_ipc_router_get_curr_pkt_size(struct msm_ipc_port *port_ptr) int msm_ipc_router_bind_control_port(struct msm_ipc_port *port_ptr) { - if (!port_ptr) + if (unlikely(!port_ptr || port_ptr->type != CLIENT_PORT)) return -EINVAL; down_write(&local_ports_lock_lhc2); |