From: Bartosz Golaszewski Date: Thu, 4 Dec 2025 09:44:12 +0000 (+0100) Subject: reset: gpio: suppress bind attributes in sysfs X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=16de4c6a8fe9ff497ca1aba33ef0dbee09f11952;p=thirdparty%2Fkernel%2Flinux.git reset: gpio: suppress bind attributes in sysfs This is a special device that's created dynamically and is supposed to stay in memory forever. We also currently don't have a devlink between it and the actual reset consumer. Suppress sysfs bind attributes so that user-space can't unbind the device because - as of now - it will cause a use-after-free splat from any user that puts the reset control handle. Fixes: cee544a40e44 ("reset: gpio: Add GPIO-based reset controller") Cc: stable@vger.kernel.org Signed-off-by: Bartosz Golaszewski Reviewed-by: Krzysztof Kozlowski Signed-off-by: Philipp Zabel --- diff --git a/drivers/reset/reset-gpio.c b/drivers/reset/reset-gpio.c index e5512b3b596b5..626c4c639c155 100644 --- a/drivers/reset/reset-gpio.c +++ b/drivers/reset/reset-gpio.c @@ -111,6 +111,7 @@ static struct auxiliary_driver reset_gpio_driver = { .id_table = reset_gpio_ids, .driver = { .name = "reset-gpio", + .suppress_bind_attrs = true, }, }; module_auxiliary_driver(reset_gpio_driver);