Re: [PATCH v2] net: ieee802154: fix shift-out-of-bound in nl802154_new_interface

[Alexander Aring]

Hi,

On Thu, 11 Nov 2021 at 09:59, Dongliang Mu <mudongliangabcd@xxxxxxxxx> wrote:
>
> In nl802154_new_interface, if type retrieved from info->attr is
> NL802154_IFTYPE_UNSPEC(-1), i.e., less than NL802154_IFTYPE_MAX,
> it will trigger a shift-out-of-bound bug in BIT(type) [1].
>
> Fix this by adding a condition to check if the variable type is
> larger than NL802154_IFTYPE_UNSPEC(-1).
>

Thanks.

I just sent another patch to fix this issue. The real problem here is
that the enum type doesn't fit into the u32 netlink range as I
mentioned some months ago. [0] Sorry for the delayed fix.

- Alex

[0] https://lore.kernel.org/linux-wpan/CAB_54W62WZCcPintGnu-kqzCmgAH7EsJxP9oaeD2NVZ03e_2Wg@xxxxxxxxxxxxxx/T/#t