linux-kernel - Re: qtnfmac: fix NULL pointer dereference

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Date:   Mon, 18 Jun 2018 08:55:35 +0000 (UTC)
From:   Kalle Valo <kvalo@...eaurora.org>
To:     "Gustavo A. R. Silva" <gustavo@...eddedor.com>
Cc:     Igor Mitsyanko <imitsyanko@...ntenna.com>,
        Avinash Patil <avinashp@...ntenna.com>,
        Sergey Matyukevich <smatyukevich@...ntenna.com>,
        "David S. Miller" <davem@...emloft.net>,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        "Gustavo A. R. Silva" <gustavo@...eddedor.com>,
        kernel-janitors@...r.kernel.org
Subject: Re: qtnfmac: fix NULL pointer dereference

"Gustavo A. R. Silva" <gustavo@...eddedor.com> wrote:

> In case *vif* is NULL at 655: if (!vif), the execution path jumps to
> label out, where *vif* is dereferenced at 679:
> 
> if (vif->sta_state == QTNF_STA_CONNECTING)
> 
> Fix this by immediately returning when *vif* is NULL instead of
> jumping to label out.
> 
> Addresses-Coverity-ID: 1469567 ("Dereference after null check")
> Fixes: 480daa9cb62c ("qtnfmac: fix invalid STA state on EAPOL failure")
> Signed-off-by: Gustavo A. R. Silva <gustavo@...eddedor.com>
> Reviewed-by: Sergey Matyukevich <sergey.matyukevich.os@...nenna.com>

Patch applied to wireless-drivers.git, thanks.

c1e3f64f8738 qtnfmac: fix NULL pointer dereference

-- 
https://patchwork.kernel.org/patch/10443507/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches