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From: Marcel Holtmann <marcel@holtmann.org>
To: Colin King <colin.king@canonical.com>
Cc: Karsten Keil <isdn@linux-pingi.de>,
	Johan Hedberg <johan.hedberg@gmail.com>,
	Luiz Augusto von Dentz <luiz.dentz@gmail.com>,
	"David S. Miller" <davem@davemloft.net>,
	Jakub Kicinski <kuba@kernel.org>,
	Andrei Emeltchenko <andrei.emeltchenko@intel.com>,
	Gustavo Padovan <gustavo.padovan@collabora.co.uk>,
	"open list:NETWORKING [GENERAL]" <netdev@vger.kernel.org>,
	BlueZ <linux-bluetooth@vger.kernel.org>,
	kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] Bluetooth: increase BTNAMSIZ to 21 chars to fix potential buffer overflow
Date: Thu, 5 Aug 2021 15:06:32 +0200	[thread overview]
Message-ID: <B3E07F67-11A7-4E96-B59D-2FE6D48BB538@holtmann.org> (raw)
In-Reply-To: <20210804150951.116814-1-colin.king@canonical.com>

Hi Colin,

> An earlier commit replaced using batostr to using %pMR sprintf for the
> construction of session->name. Static analysis detected that this new
> method can use a total of 21 characters (including the trailing '\0')
> so we need to increase the BTNAMSIZ from 18 to 21 to fix potential
> buffer overflows.
> 
> Addresses-Coverity: ("Out-of-bounds write")
> Fixes: fcb73338ed53 ("Bluetooth: Use %pMR in sprintf/seq_printf instead of batostr")
> Signed-off-by: Colin Ian King <colin.king@canonical.com>
> ---
> net/bluetooth/cmtp/cmtp.h | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)

patch has been applied to bluetooth-next tree.

Regards

Marcel


      reply	other threads:[~2021-08-05 13:06 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-04 15:09 Colin King
2021-08-05 13:06 ` Marcel Holtmann [this message]

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