diff options
| -rw-r--r-- | drivers/firewire/fw-cdev.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/firewire/fw-cdev.c b/drivers/firewire/fw-cdev.c index a1637a86da3..d48fa1c23a7 100644 --- a/drivers/firewire/fw-cdev.c +++ b/drivers/firewire/fw-cdev.c @@ -1245,6 +1245,10 @@ static int ioctl_send_broadcast_request(struct client *client, void *buffer) return -EINVAL; } + /* Security policy: Only allow accesses to Units Space. */ + if (request->offset < CSR_REGISTER_BASE + CSR_CONFIG_ROM_END) + return -EACCES; + return init_request(client, request, LOCAL_BUS | 0x3f, SCODE_100); } |