gpio: shared: fix use-after-free bug when adding shared proxies

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The GPIO lookup table can stay alive for longer than the kobject whose
name string's address we're assigning to lookup->dev_id. Fix a potential
UAF by duplicating the string.

Cc: stable@vger.kernel.org
Fixes: a060b8c511 ("gpiolib: implement low-level, shared GPIO support")
Reviewed-by: Linus Walleij <linusw@kernel.org>
Link: https://patch.msgid.link/20261014-gpio-shared-fwnode-lookup-v4-1-2253ad645fd6@oss.qualcomm.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>

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Bartosz Golaszewski 2026-10-14 11:38:25 +02:00

parent 52336337f1

commit bd22f7e635

1 changed files with 8 additions and 4 deletions

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drivers/gpio/gpiolib-shared.c

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