linux-kernel - Re: [PATCH] drivers/net/ethernet/neterion/vxge: Fix a use-after-free bug in vxge-main.c

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Message-Id: <165563641313.16837.10425130041626423819.git-patchwork-notify@kernel.org>
Date:   Sun, 19 Jun 2022 11:00:13 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Wentao_Liang <Wentao_Liang_g@....com>
Cc:     jdmason@...zu.us, davem@...emloft.net, edumazet@...gle.com,
        kuba@...nel.org, pabeni@...hat.com, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drivers/net/ethernet/neterion/vxge: Fix a use-after-free bug
 in vxge-main.c

Hello:

This patch was applied to netdev/net.git (master)
by David S. Miller <davem@...emloft.net>:

On Sun, 19 Jun 2022 22:14:54 +0800 you wrote:
> The pointer vdev points to a memory region adjacent to a net_device
> structure ndev, which is a field of hldev. At line 4740, the invocation
> to vxge_device_unregister unregisters device hldev, and it also releases
> the memory region pointed by vdev->bar0. At line 4743, the freed memory
> region is referenced (i.e., iounmap(vdev->bar0)), resulting in a
> use-after-free vulnerability. We can fix the bug by calling iounmap
> before vxge_device_unregister.
> 
> [...]

Here is the summary with links:
  - drivers/net/ethernet/neterion/vxge: Fix a use-after-free bug in vxge-main.c
    https://git.kernel.org/netdev/net/c/8fc74d18639a

You are awesome, thank you!
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