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linux/drivers/usb/serial
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Marek Marczykowski-Górecki 376650dc1c USB: serial: debug: do not echo input by default 
commit 00af4f3dda upstream.

This driver is intended as a "client" end of the console connection.
When connected to a host it's supposed to receive debug logs, and
possibly allow to interact with whatever debug console is available
there. Feeding messages back, depending on a configuration may cause log
messages be executed as shell commands (which can be really bad if one
is unlucky, imagine a log message like "prevented running `rm -rf
/home`"). In case of Xen, it exposes sysrq-like debug interface, and
feeding it its own logs will pretty quickly hit 'R' for "instant
reboot".

Contrary to a classic serial console, the USB one cannot be configured
ahead of time, as the device shows up only when target OS is up. And at
the time device is opened to execute relevant ioctl, it's already too
late, especially when logs start flowing shortly after device is
initialized.
Avoid the issue by changing default to no echo for this type of devices.

Signed-off-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
[ johan: amend summary; disable also ECHONL ]
Cc: stable@vger.kernel.org
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2024-08-14 13:52:56 +02:00
..
aircable.c USB: serial: drop redundant transfer-buffer casts 2020-07-09 09:20:17 +02:00
ark3116.c usb: serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
belkin_sa.c usb: serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
belkin_sa.h USB: serial: Use the correct style for SPDX License Identifier 2020-04-22 09:26:47 +02:00
bus.c bus: Make remove callback return void 2021-07-21 11:53:42 +02:00
ch341.c Merge 6.0-rc4 into tty-next 2022-09-05 07:59:28 +02:00
console.c USB: serial: console: move mutex_unlock() before usb_serial_put() 2022-09-19 15:30:16 +02:00
cp210x.c USB: serial: cp210x: add pid/vid for TDK NC0110013M and MM0110113M 2024-04-03 15:19:30 +02:00
cyberjack.c USB: serial: make usb_serial_driver::write_room return uint 2021-05-19 10:56:40 +02:00
cypress_m8.c usb: serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
cypress_m8.h USB: serial: cypress_m8: enable Simply Automated UPB PIM 2020-06-23 09:56:17 +02:00
digi_acceleport.c usb: serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
empeg.c docs: usb: rename files to .rst and add them to drivers-api 2019-06-20 14:28:36 +02:00
ezusb_convert.pl License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
f81232.c USB: serial: f81232: fix division by zero on line-speed change 2022-12-21 17:48:07 +01:00
f81534.c USB: serial: f81534: fix division by zero on line-speed change 2022-12-21 17:48:08 +01:00
ftdi_sio.c USB: serial: ftdi_sio: add support for GMC Z216C Adapter IR-USB 2024-04-03 15:19:29 +02:00
ftdi_sio.h USB: serial: ftdi_sio: rename channel index 2022-09-15 08:05:53 +02:00
ftdi_sio_ids.h USB: serial: ftdi_sio: add support for GMC Z216C Adapter IR-USB 2024-04-03 15:19:29 +02:00
garmin_gps.c USB: serial: use kmemdup instead of kmalloc + memcpy 2022-06-22 08:56:52 +02:00
generic.c USB: serial: make usb_serial_driver::chars_in_buffer return uint 2021-05-19 10:56:41 +02:00
io_16654.h USB: serial: Use the correct style for SPDX License Identifier 2020-04-22 09:26:47 +02:00
io_edgeport.c usb: serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
io_edgeport.h USB: serial: io_edgeport: drop unused definitions 2021-04-08 09:50:04 +02:00
io_ionsp.h USB: serial: Use the correct style for SPDX License Identifier 2020-04-22 09:26:47 +02:00
io_ti.c usb: serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
io_ti.h USB: serial: io_ti: drop unnecessary packed attributes 2021-04-13 18:23:34 +02:00
io_usbvend.h USB: serial: io_ti: add Agilent E5805A support 2022-06-09 14:13:28 +02:00
ipaq.c USB: serial: replace symbolic permissions by octal permissions 2021-08-26 09:38:27 +02:00
ipw.c USB: serial: Remove redundant license text 2017-11-04 11:55:38 +01:00
ir-usb.c usb: serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
iuu_phoenix.c usb: serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
iuu_phoenix.h USB: serial: Use the correct style for SPDX License Identifier 2020-04-22 09:26:47 +02:00
Kconfig USB: serial: simple: add Nokia phone driver 2022-03-03 09:27:36 +01:00
keyspan.c usb: serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
keyspan_pda.c usb: serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
keyspan_usa26msg.h USB: serial: keyspan_usa: add proper SPDX lines for .h files 2019-01-18 11:09:32 +01:00
keyspan_usa28msg.h USB: serial: keyspan_usa: add proper SPDX lines for .h files 2019-01-18 11:09:32 +01:00
keyspan_usa49msg.h USB: serial: keyspan_usa: add proper SPDX lines for .h files 2019-01-18 11:09:32 +01:00
keyspan_usa67msg.h USB: serial: keyspan_usa: add proper SPDX lines for .h files 2019-01-18 11:09:32 +01:00
keyspan_usa90msg.h USB: serial: keyspan_usa: add proper SPDX lines for .h files 2019-01-18 11:09:32 +01:00
kl5kusb105.c usb: serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
kl5kusb105.h USB: serial: kl5kusb105: remove KLSI device id 2018-07-11 10:11:29 +02:00
kobil_sct.c usb: serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
kobil_sct.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Makefile USB: serial: add MaxLinear/Exar USB to Serial driver 2021-01-21 10:49:37 +01:00
Makefile-keyspan_pda_fw USB: add SPDX identifiers to all remaining Makefiles 2017-11-07 15:53:48 +01:00
mct_u232.c usb: serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
mct_u232.h USB: serial: Use the correct style for SPDX License Identifier 2020-04-22 09:26:47 +02:00
metro-usb.c USB: serial: drop irq-flags initialisations 2021-05-21 15:46:25 +02:00
mos7720.c usb: serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
mos7840.c USB: serial: mos7840: fix crash on resume 2024-07-18 13:18:39 +02:00
mxuport.c usb: serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
navman.c USB: serial: fix module-license macros 2017-11-04 11:58:00 +01:00
omninet.c USB: serial: omninet: update driver description 2021-05-25 08:59:17 +02:00
opticon.c USB: serial: use kmemdup instead of kmalloc + memcpy 2022-06-22 08:56:52 +02:00
option.c USB: serial: option: add Rolling RW350-GL variants 2024-07-18 13:18:39 +02:00
oti6858.c usb: serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
oti6858.h USB: serial: Use the correct style for SPDX License Identifier 2020-04-22 09:26:47 +02:00
pl2303.c usb: serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
pl2303.h USB: serial: pl2303: add device id for HP LM930 Display 2022-05-05 13:31:03 +02:00
qcaux.c USB: serial: fix module-license macros 2017-11-04 11:58:00 +01:00
qcserial.c USB: serial: qcserial: add new usb-id for Dell Wireless DW5826e 2024-02-16 19:06:29 +01:00
quatech2.c usb: serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
safe_serial.c USB: serial: Remove redundant license text 2017-11-04 11:55:38 +01:00
sierra.c USB: serial: fix tty-port initialized comments 2022-07-25 11:01:40 +02:00
spcp8x5.c usb: serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
ssu100.c usb: serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
symbolserial.c USB: serial: make remove callback return void 2021-02-09 13:13:58 +01:00
ti_usb_3410_5052.c usb: serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
upd78f0730.c usb: serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
usb-serial-simple.c USB: serial: simple: sort driver entries 2023-08-03 10:24:09 +02:00
usb-serial.c tty: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
usb-wwan.h USB: serial: make usb_serial_driver::chars_in_buffer return uint 2021-05-19 10:56:41 +02:00
usb_debug.c USB: serial: debug: do not echo input by default 2024-08-14 13:52:56 +02:00
usb_wwan.c USB-serial updates for 5.20-rc1 2022-07-25 11:28:52 +02:00
visor.c docs: usb: rename files to .rst and add them to drivers-api 2019-06-20 14:28:36 +02:00
visor.h USB: serial: Use the correct style for SPDX License Identifier 2020-04-22 09:26:47 +02:00
whiteheat.c usb: serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
whiteheat.h USB: serial: Use the correct style for SPDX License Identifier 2020-04-22 09:26:47 +02:00
wishbone-serial.c USB: serial: Remove redundant license text 2017-11-04 11:55:38 +01:00
xr_serial.c usb: serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
xsens_mt.c USB: serial: fix module-license macros 2017-11-04 11:58:00 +01:00