linux-kernel - Re: [PATCH net-next] net: usb: aqc111: fix error handling of usbnet read calls

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Message-Id: 
 <174826922825.939427.1321439383834289633.git-patchwork-notify@kernel.org>
Date: Mon, 26 May 2025 14:20:28 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Nikita Zhandarovich <n.zhandarovich@...tech.ru>
Cc: andrew+netdev@...n.ch, davem@...emloft.net, edumazet@...gle.com,
 kuba@...nel.org, pabeni@...hat.com, linux-usb@...r.kernel.org,
 netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
 syzbot+3b6b9ff7b80430020c7b@...kaller.appspotmail.com,
 lvc-project@...uxtesting.org
Subject: Re: [PATCH net-next] net: usb: aqc111: fix error handling of usbnet read
 calls

Hello:

This patch was applied to netdev/net-next.git (main)
by Paolo Abeni <pabeni@...hat.com>:

On Tue, 20 May 2025 14:32:39 +0300 you wrote:
> Syzkaller, courtesy of syzbot, identified an error (see report [1]) in
> aqc111 driver, caused by incomplete sanitation of usb read calls'
> results. This problem is quite similar to the one fixed in commit
> 920a9fa27e78 ("net: asix: add proper error handling of usb read errors").
> 
> For instance, usbnet_read_cmd() may read fewer than 'size' bytes,
> even if the caller expected the full amount, and aqc111_read_cmd()
> will not check its result properly. As [1] shows, this may lead
> to MAC address in aqc111_bind() being only partly initialized,
> triggering KMSAN warnings.
> 
> [...]

Here is the summary with links:
  - [net-next] net: usb: aqc111: fix error handling of usbnet read calls
    https://git.kernel.org/netdev/net-next/c/405b0d610745

You are awesome, thank you!
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