linux-kernel - Re: [PATCH] ethernet: myri10ge: Fix a use after free in myri10ge_sw

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Date:   Mon, 29 Mar 2021 20:50:09 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Lv Yunlong <lyl2019@...l.ustc.edu.cn>
Cc:     christopher.lee@...i.com, davem@...emloft.net, kuba@...nel.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ethernet: myri10ge: Fix a use after free in myri10ge_sw_tso

Hello:

This patch was applied to netdev/net.git (refs/heads/master):

On Mon, 29 Mar 2021 05:36:48 -0700 you wrote:
> In myri10ge_sw_tso, the skb_list_walk_safe macro will set
> (curr) = (segs) and (next) = (curr)->next. If status!=0 is true,
> the memory pointed by curr and segs will be free by dev_kfree_skb_any(curr).
> But later, the segs is used by segs = segs->next and causes a uaf.
> 
> As (next) = (curr)->next, my patch replaces seg->next to next.
> 
> [...]

Here is the summary with links:
  - ethernet: myri10ge: Fix a use after free in myri10ge_sw_tso
    https://git.kernel.org/netdev/net/c/63415767a244

You are awesome, thank you!
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