lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:   Mon, 24 Oct 2016 15:30:12 -0700
From:   Hoan Tran <hotran@....com>
To:     Wolfram Sang <wsa@...-dreams.de>, linux-i2c@...r.kernel.org
Cc:     lkml <linux-kernel@...r.kernel.org>,
        Phil Endecott <phil_gjouf_endecott@...zphil.org>,
        Loc Ho <lho@....com>, Tin Huynh <tnhuynh@....com>,
        patches <patches@....com>, Hoan Tran <hotran@....com>
Subject: Re: [PATCH] i2c: xgene: Avoid dma_buffer overrun

On Mon, Oct 10, 2016 at 10:13 AM, Hoan Tran <hotran@....com> wrote:
> SMBus block command uses the first byte of buffer for the data length.
> The dma_buffer should be increased by 1 to avoid the overrun issue.
>
> Reported-by: Phil Endecott <phil_gjouf_endecott@...zphil.org>
> Signed-off-by: Hoan Tran <hotran@....com>
> ---
>  drivers/i2c/busses/i2c-xgene-slimpro.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/i2c/busses/i2c-xgene-slimpro.c b/drivers/i2c/busses/i2c-xgene-slimpro.c
> index 4233f56..3c38029 100644
> --- a/drivers/i2c/busses/i2c-xgene-slimpro.c
> +++ b/drivers/i2c/busses/i2c-xgene-slimpro.c
> @@ -105,7 +105,7 @@ struct slimpro_i2c_dev {
>         struct mbox_chan *mbox_chan;
>         struct mbox_client mbox_client;
>         struct completion rd_complete;
> -       u8 dma_buffer[I2C_SMBUS_BLOCK_MAX];
> +       u8 dma_buffer[I2C_SMBUS_BLOCK_MAX + 1]; /* dma_buffer[0] is used for length */
>         u32 *resp_msg;
>  };
>
> --
> 1.9.1
>

Any comments on this patch.

Thanks
Hoan

Powered by blists - more mailing lists