linux-kernel - Re: [PATCH] iwlwifi: actually check allocated conf

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Date:   Tue, 14 Apr 2020 14:14:17 +0200
From:   Sedat Dilek <sedat.dilek@...il.com>
To:     Kalle Valo <kvalo@...eaurora.org>
Cc:     Luca Coelho <luca@...lho.fi>, Chris Rorvick <chris@...vick.com>,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Johannes Berg <johannes.berg@...el.com>,
        Emmanuel Grumbach <emmanuel.grumbach@...el.com>,
        Intel Linux Wireless <linuxwifi@...el.com>,
        "David S. Miller" <davem@...emloft.net>
Subject: Re: [PATCH] iwlwifi: actually check allocated conf_tlv pointer

On Sun, Apr 5, 2020 at 11:14 AM Kalle Valo <kvalo@...eaurora.org> wrote:
>
> Luca Coelho <luca@...lho.fi> writes:
>
> > On Sun, 2020-04-05 at 11:44 +0300, Kalle Valo wrote:
> >> Chris Rorvick <chris@...vick.com> 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@...vick.com>
> >>
> >> 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.
>
> Ok, assigned it to me in patchwork.
>
> > This can happen in OOM situations and, when it does, we will
> > potentially try to dereference a NULL pointer.
>
> I'll add this to the commit log.
>

Hi,

Friendly ping.

Any progress on this?

This patch seems not have landed in Linux v5.7-rc1.

$ head -5 Makefile
# SPDX-License-Identifier: GPL-2.0
VERSION = 5
PATCHLEVEL = 7
SUBLEVEL = 0
EXTRAVERSION = -rc1

$ LC_ALL=C git apply --check --verbose
../patches/iwlwifi-fixes-5.6/iwlwifi-actually-check-allocated-conf_tlv-pointer-v2-dileks.patch
Checking patch drivers/net/wireless/intel/iwlwifi/iwl-drv.c...

I have attached my v2 which I have tested on top of Linux v5.6.3.

Feel free to add my...

Tested-by: Sedat Dilek <sedat.dilek@...il.com>

Regards,
- Sedat -

View attachment "iwlwifi-actually-check-allocated-conf_tlv-pointer-v2-dileks.patch" of type "text/x-patch" (5913 bytes)