diff options
| author | Johan Hovold <johan@kernel.org> | 2017-01-03 16:39:44 +0100 |
|---|---|---|
| committer | Johan Hovold <johan@kernel.org> | 2017-01-04 10:37:16 +0100 |
| commit | 4f9785cc99feeb3673993b471f646b4dbaec2cc1 (patch) | |
| tree | 94c1a64ad12028ac716e1e369bd937753a18180e | |
| parent | a323fefc6f5079844dc62ffeb54f491d0242ca35 (diff) | |
USB: serial: io_ti: fix another NULL-deref at open
In case a device is left in "boot-mode" we must not register any port
devices in order to avoid a NULL-pointer dereference on open due to
missing endpoints. This could be used by a malicious device to trigger
an OOPS:
Unable to handle kernel NULL pointer dereference at virtual address 00000030
...
[<bf0caa84>] (edge_open [io_ti]) from [<bf0b0118>] (serial_port_activate+0x68/0x98 [usbserial])
[<bf0b0118>] (serial_port_activate [usbserial]) from [<c0470ca4>] (tty_port_open+0x9c/0xe8)
[<c0470ca4>] (tty_port_open) from [<bf0b0da0>] (serial_open+0x48/0x6c [usbserial])
[<bf0b0da0>] (serial_open [usbserial]) from [<c0469178>] (tty_open+0xcc/0x5cc)
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
| -rw-r--r-- | drivers/usb/serial/io_ti.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/usb/serial/io_ti.c b/drivers/usb/serial/io_ti.c |