netdev - Re: [-next] rtlwifi: kfree entry until after entry->bssid has been accessed

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Date:   Thu, 27 Jul 2017 10:58:35 +0000 (UTC)
From:   Kalle Valo <kvalo@...eaurora.org>
To:     Colin Ian King <colin.king@...onical.com>
Cc:     Larry Finger <Larry.Finger@...inger.net>,
        Chaoming Li <chaoming_li@...lsil.com.cn>,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [-next] rtlwifi: kfree entry until after entry->bssid has been
 accessed

Colin Ian King <colin.king@...onical.com> wrote:

> From: Colin Ian King <colin.king@...onical.com>
> 
> The current code kfree's entry and then dereferences it by accessing
> entry->bssid.  Avoid the dereference-after-free by moving the kfree
> after the access to entry->bssid.
> 
> Detected by CoverityScan, CID#1448600 ("Read from pointer after free")
> 
> Signed-off-by: Colin Ian King <colin.king@...onical.com>

Patch applied to wireless-drivers-next.git, thanks.

d0116f6f7b30 rtlwifi: kfree entry until after entry->bssid has been accessed

-- 
https://patchwork.kernel.org/patch/9819083/

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