From: Jakub Kicinski <kuba@kernel.org>
To: "Tianchu Chen" <tianchu.chen@linux.dev>
Cc: andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com,
pabeni@redhat.com, linux-usb@vger.kernel.org,
netdev@vger.kernel.org
Subject: Re: [PATCH] net: usb: cx82310_eth: stop parsing reboot marker as packet
Date: Mon, 29 Jun 2026 17:44:58 -0700 [thread overview]
Message-ID: <20260629174458.6ebf647d@kernel.org> (raw)
In-Reply-To: <700e16e9523d7f1299b00df75b13a3c66b6e517b@linux.dev>
On Thu, 25 Jun 2026 15:32:04 +0000 Tianchu Chen wrote:
> From: Tianchu Chen <flynnnchen@tencent.com>
>
> Discovered by Atuin - Automated Vulnerability Discovery Engine.
>
> cx82310_rx_fixup() treats an RX length of 0xffff as a device reboot
> marker and schedules work to re-enable ethernet mode, but then continues
> processing the marker as a normal packet length. This is an out-of-bounds
> heap write controlled by the usb device.
Where? Can you be more specific in the commit message? At a glance
the accesses seem to be bound-checked with skb->len.
--
pw-bot: cr
next prev parent reply other threads:[~2026-06-30 0:45 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-25 15:32 [PATCH] net: usb: cx82310_eth: stop parsing reboot marker as packet Tianchu Chen
2026-06-30 0:44 ` Jakub Kicinski [this message]
2026-06-30 10:30 ` Tianchu Chen
2026-06-30 22:42 ` Jakub Kicinski
2026-07-01 2:45 ` Tianchu Chen
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