Re: [PATCH] pinctrl: samsung: Validate alias coming from DT

[Geert Uytterhoeven]

On Tue, Feb 20, 2018 at 7:17 PM, Krzysztof Kozlowski <krzk@xxxxxxxxxx> wrote:
> Driver uses alias from Device Tree as an index of pin controller data
> array.  In case of a wrong DTB or an out-of-tree DTB, the alias could be
> outside of this data array leading to out-of-bounds access.
>
> Depending on binary and memory layout, this could be handled properly
> (showing error like "samsung-pinctrl 3860000.pinctrl: driver data not
> available") or could lead to exceptions.
>
> Reported-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
> Cc: <stable@xxxxxxxxxxxxxxx>
> Fixes: 30574f0db1b1 ("pinctrl: add samsung pinctrl and gpiolib driver")
> Signed-off-by: Krzysztof Kozlowski <krzk@xxxxxxxxxx>

Reviewed-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds