linux-kernel - Re: [PATCH] net: qrtr: Avoid potential use after free in MHI send

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Message-Id: <161902860914.28303.4568064883705440314.git-patchwork-notify@kernel.org>
Date:   Wed, 21 Apr 2021 18:10:09 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Bjorn Andersson <bjorn.andersson@...aro.org>
Cc:     mani@...nel.org, davem@...emloft.net, kuba@...nel.org,
        linux-arm-msm@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] net: qrtr: Avoid potential use after free in MHI send

Hello:

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

On Wed, 21 Apr 2021 10:40:07 -0700 you wrote:
> It is possible that the MHI ul_callback will be invoked immediately
> following the queueing of the skb for transmission, leading to the
> callback decrementing the refcount of the associated sk and freeing the
> skb.
> 
> As such the dereference of skb and the increment of the sk refcount must
> happen before the skb is queued, to avoid the skb to be used after free
> and potentially the sk to drop its last refcount..
> 
> [...]

Here is the summary with links:
  - net: qrtr: Avoid potential use after free in MHI send
    https://git.kernel.org/netdev/net/c/47a017f33943

You are awesome, thank you!
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