From: Wolfram Sang <wsa+renesas@sang-engineering.com>
To: Sven Eckelmann <sven@narfation.org>
Cc: Chris Packham <chris.packham@alliedtelesis.co.nz>,
Andi Shyti <andi.shyti@kernel.org>,
linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org,
Jonas Jelonek <jelonek.jonas@gmail.com>,
Harshal Gohel <hg@simonwunderlich.de>,
Simon Wunderlich <sw@simonwunderlich.de>,
Alex Guo <alexguo1023@gmail.com>,
stable@vger.kernel.org
Subject: Re: [PATCH i2c-host-fixes v4 1/5] i2c: rtl9300: Fix out-of-bounds bug in rtl9300_i2c_smbus_xfer
Date: Sat, 9 Aug 2025 19:34:54 +0200 [thread overview]
Message-ID: <aJeGvoSYS5Raqxyk@shikoro> (raw)
In-Reply-To: <20250809-i2c-rtl9300-multi-byte-v4-1-d71dd5eb6121@narfation.org>
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On Sat, Aug 09, 2025 at 08:40:54AM +0200, Sven Eckelmann wrote:
> From: Alex Guo <alexguo1023@gmail.com>
>
> The data->block[0] variable comes from user. Without proper check,
> the variable may be very large to cause an out-of-bounds bug.
>
> Fix this bug by checking the value of data->block[0] first.
>
> 1. commit 39244cc75482 ("i2c: ismt: Fix an out-of-bounds bug in
> ismt_access()")
> 2. commit 92fbb6d1296f ("i2c: xgene-slimpro: Fix out-of-bounds bug in
> xgene_slimpro_i2c_xfer()")
>
> Cc: <stable@vger.kernel.org>
> Fixes: c366be720235 ("i2c: Add driver for the RTL9300 I2C controller")
> Signed-off-by: Alex Guo <alexguo1023@gmail.com>
> Reviewed-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
> Tested-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
> Signed-off-by: Sven Eckelmann <sven@narfation.org>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
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next prev parent reply other threads:[~2025-08-09 17:34 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-08-09 6:40 [PATCH i2c-host-fixes v4 0/5] i2c: rtl9300: Fix multi-byte I2C operations Sven Eckelmann
2025-08-09 6:40 ` [PATCH i2c-host-fixes v4 1/5] i2c: rtl9300: Fix out-of-bounds bug in rtl9300_i2c_smbus_xfer Sven Eckelmann
2025-08-09 17:34 ` Wolfram Sang [this message]
2025-08-09 6:40 ` [PATCH i2c-host-fixes v4 2/5] i2c: rtl9300: Fix multi-byte I2C write Sven Eckelmann
2025-08-09 6:40 ` [PATCH i2c-host-fixes v4 3/5] i2c: rtl9300: Increase timeout for transfer polling Sven Eckelmann
2025-08-09 6:40 ` [PATCH i2c-host-fixes v4 4/5] i2c: rtl9300: Add missing count byte for SMBus Block Ops Sven Eckelmann
2025-08-09 6:40 ` [PATCH i2c-host v4 5/5] i2c: rtl9300: Implement I2C block read and write Sven Eckelmann
2025-08-09 22:11 ` Jonas Jelonek
2025-08-10 5:59 ` Sven Eckelmann
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