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Tzung-Bi Shih eab28bfafc platform/chrome: cros_ec_chardev: fix kernel data leak from ioctl 
[ Upstream commit b20cf3f89c56b5f6a38b7f76a8128bf9f291bbd3 ]

It is possible to peep kernel page's data by providing larger `insize`
in struct cros_ec_command[1] when invoking EC host commands.

Fix it by using zeroed memory.

[1]: https://elixir.bootlin.com/linux/v6.2/source/include/linux/platform_data/cros_ec_proto.h#L74

Fixes: eda2e30c66 ("mfd / platform: cros_ec: Miscellaneous character device to talk with the EC")
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Link: https://lore.kernel.org/r/20230324010658.1082361-1-tzungbi@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-03-30 12:49:12 +02:00
..
wilco_ec platform/chrome: wilco_ec: event: Fix typo in comment 2022-06-24 04:01:13 +00:00
chromeos_acpi.c platform/chrome: Add ChromeOS ACPI device driver 2022-05-13 19:42:30 +08:00
chromeos_laptop.c platform/chrome: fix double-free in chromeos_laptop_prepare() 2022-08-22 06:56:45 +00:00
chromeos_privacy_screen.c
chromeos_pstore.c
chromeos_tbmc.c
cros_ec.c platform/chrome: cros_ec: Notify the PM of wake events during resume 2022-09-19 10:34:38 +08:00
cros_ec.h
cros_ec_chardev.c platform/chrome: cros_ec_chardev: fix kernel data leak from ioctl 2023-03-30 12:49:12 +02:00
cros_ec_debugfs.c platform/chrome: cros_ec: Expose suspend_timeout_ms in debugfs 2022-08-24 02:37:07 +00:00
cros_ec_i2c.c i2c: Make remove callback return void 2022-08-16 12:46:26 +02:00
cros_ec_ishtp.c platform/chrome: correct cros_ec_prepare_tx() usage 2022-05-16 10:01:51 +08:00
cros_ec_lightbar.c
cros_ec_lpc.c platform/chrome: correct cros_ec_prepare_tx() usage 2022-05-16 10:01:51 +08:00
cros_ec_lpc_mec.c
cros_ec_lpc_mec.h
cros_ec_proto.c platform/chrome: cros_ec_proto: Update version on GET_NEXT_EVENT failure 2022-08-15 03:24:49 +00:00
cros_ec_proto_test.c platform/chrome: cros_ec_proto: add Kunit test for cros_ec_cmd() 2022-07-20 01:22:59 +00:00
cros_ec_rpmsg.c platform/chrome: correct cros_ec_prepare_tx() usage 2022-05-16 10:01:51 +08:00
cros_ec_sensorhub.c
cros_ec_sensorhub_ring.c
cros_ec_sensorhub_trace.h
cros_ec_spi.c platform/chrome: cros_ec_spi: drop BUG_ON() if din isn't large enough 2022-05-16 10:01:52 +08:00
cros_ec_sysfs.c
cros_ec_trace.c
cros_ec_trace.h platform/chrome: use macros for passthru indexes 2022-06-10 02:31:42 +00:00
cros_ec_typec.c platform/chrome: cros_ec_typec: Update port DP VDO 2023-03-10 09:32:52 +01:00
cros_ec_vbc.c
cros_kbd_led_backlight.c platform/chrome: cros_kbd_led_backlight: fix build warning 2022-07-20 01:22:59 +00:00
cros_kunit_util.c platform/chrome: cros_kunit_util: add default value for msg->result 2022-07-21 08:49:28 +00:00
cros_kunit_util.h platform/chrome: cros_kunit_util: add default value for msg->result 2022-07-21 08:49:28 +00:00
cros_typec_switch.c platform/chrome: cros_typec_switch: Inline DRV_NAME 2022-09-01 10:15:34 +08:00
cros_usbpd_logger.c
cros_usbpd_notify.c platform/chrome: cros_usbpd_notify: Fix error handling in cros_usbpd_notify_init() 2022-12-31 13:31:57 +01:00
Kconfig platform/chrome: cros_typec_switch: Add switch driver 2022-08-18 22:20:35 +00:00
Makefile platform/chrome: cros_typec_switch: Add switch driver 2022-08-18 22:20:35 +00:00