linux-kernel - Re: [PATCH] wireless: ath10k: Fix a use after free in ath10k_htc_send

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Date:   Thu, 22 Apr 2021 13:54:33 +0000 (UTC)
From:   Kalle Valo <kvalo@...eaurora.org>
To:     Lv Yunlong <lyl2019@...l.ustc.edu.cn>
Cc:     davem@...emloft.net, kuba@...nel.org, ath10k@...ts.infradead.org,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, Lv Yunlong <lyl2019@...l.ustc.edu.cn>
Subject: Re: [PATCH] wireless: ath10k: Fix a use after free in
 ath10k_htc_send_bundle

Lv Yunlong <lyl2019@...l.ustc.edu.cn> wrote:

> In ath10k_htc_send_bundle, the bundle_skb could be freed by
> dev_kfree_skb_any(bundle_skb). But the bundle_skb is used later
> by bundle_skb->len.
> 
> As skb_len = bundle_skb->len, my patch replaces bundle_skb->len to
> skb_len after the bundle_skb was freed.
> 
> Fixes: c8334512f3dd1 ("ath10k: add htt TX bundle for sdio")
> Signed-off-by: Lv Yunlong <lyl2019@...l.ustc.edu.cn>
> Signed-off-by: Kalle Valo <kvalo@...eaurora.org>

Patch applied to ath-next branch of ath.git, thanks.

8392df5d7e0b ath10k: Fix a use after free in ath10k_htc_send_bundle

-- 
https://patchwork.kernel.org/project/linux-wireless/patch/20210329120154.8963-1-lyl2019@mail.ustc.edu.cn/

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