From: Wolfram Sang <wsa+renesas@sang-engineering.com>
To: Alex Guo <alexguo1023@gmail.com>
Cc: conor.dooley@microchip.com, daire.mcnamara@microchip.com,
andi.shyti@kernel.org, linux-riscv@lists.infradead.org,
linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] i2c: busses: Fix out-of-bounds bug in mchp_corei2c_smbus_xfer
Date: Sat, 28 Jun 2025 22:09:48 +0200 [thread overview]
Message-ID: <aGBMDFLH7aJGFyQ2@shikoro> (raw)
In-Reply-To: <20250615234919.525431-1-alexguo1023@gmail.com>
On Sun, Jun 15, 2025 at 07:49:19PM -0400, Alex Guo wrote:
> The data->block[0] variable comes from user. Without proper check,
> the variable may be very large to cause an out-of-bounds bug.
Okay, okay, instead of adding these limits to all these drivers, let me
start adding SMBus3 support to the kernel which allows for bigger block
sizes. I probably won't have time to export this to user space yet, but
let's at least make sure the kernel, and thus the drivers, won't suffer
from buffer overflows anymore.
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next prev parent reply other threads:[~2025-06-28 20:13 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-15 23:49 [PATCH] i2c: busses: Fix out-of-bounds bug in mchp_corei2c_smbus_xfer Alex Guo
2025-06-19 7:33 ` Conor Dooley
2025-06-28 20:09 ` Wolfram Sang [this message]
2025-07-15 21:58 ` Andi Shyti
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