Re: [PATCH] iwlwifi: actually check allocated conf_tlv pointer

From: Luca Coelho
Date: Sun Apr 05 2020 - 04:52:15 EST


On Sun, 2020-04-05 at 11:44 +0300, Kalle Valo wrote:
> Chris Rorvick <chris@xxxxxxxxxxx> writes:
>
> > Commit 71bc0334a637 ("iwlwifi: check allocated pointer when allocating
> > conf_tlvs") attempted to fix a typoe introduced by commit 17b809c9b22e
> > ("iwlwifi: dbg: move debug data to a struct") but does not implement the
> > check correctly.
> >
> > Tweeted-by: @grsecurity
> > Signed-off-by: Chris Rorvick <chris@xxxxxxxxxxx>
>
> I'll add:
>
> Fixes: 71bc0334a637 ("iwlwifi: check allocated pointer when allocating conf_tlvs")
>
> > ---
> > In this wasn't picked up?
>
> Luca, can I take this directly?

Yes, please take it directly. This can happen in OOM situations and,
when it does, we will potentially try to dereference a NULL pointer.

Thanks!

--
Cheers,
Luca.