Re: [PATCH 1/2] gpio: shared: fix use-after-free bug when adding shared proxies

[Linus Walleij]

On Tue, Sep 29, 2026 at 2:32 PM Bartosz Golaszewski
<bartosz.golaszewski@xxxxxxxxxxxxxxxx> wrote:

> 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.
>
> Assisted-by: LLM
> Cc: stable@xxxxxxxxxxxxxxx
> Fixes: a060b8c511ab ("gpiolib: implement low-level, shared GPIO support")
> Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxxxxxxxx>

That's a good find.

Reviewed-by: Linus Walleij <linusw@xxxxxxxxxx>

Yours,
Linus Walleij