Re: [PATCH v1 3/3] wifi: brcm80211: change channel_list to a flexible array

From: Kees Cook
Date: Tue Aug 01 2023 - 13:30:36 EST


On Tue, Aug 01, 2023 at 05:36:42PM +0200, Petr Tesarik wrote:
> From: Petr Tesarik <petr.tesarik.ext@xxxxxxxxxx>
>
> The channel list is in fact a flexible array, but it has a length of 1 to
> make sure there is enough room for the special chanspec -1 when the struct
> is allocated on stack to abort a scan.

There is patch series proposing a way to put flex array structures with
a compile-time-known size on the stack. Would that help for this series?
https://lore.kernel.org/netdev/20230801111923.118268-1-przemyslaw.kitszel@xxxxxxxxx/

-Kees

>
--
Kees Cook