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(parent: 2046362) | patch
gpio: Fix kernel stack leak to userspace
authorLinus Walleij <linus.walleij@linaro.org>
Mon, 22 Jan 2018 12:19:28 +0000 (13:19 +0100)
committerLinus Walleij <linus.walleij@linaro.org>
Tue, 23 Jan 2018 13:43:45 +0000 (14:43 +0100)
commit24bd3efc9d1efb5f756a7c6f807a36ddb6adc671
tree80b9be8d100ed71c1754150950e4c61033cb59detree | snapshot
parent2046362cf11d3dcb0c6904f7f3209c568d7858b3commit | diff
gpio: Fix kernel stack leak to userspace

The GPIO event descriptor was leaking kernel stack to
userspace because we don't zero the variable before
use. Ooops. Fix this.

Cc: stable@vger.kernel.org
Reported-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Bartosz Golaszewski <brgl@bgdev.pl>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
drivers/gpio/gpiolib.c diff | blob | history
Domain: System / Kernel;