linux-kernel - Re: [patch v2] gru: info leak in gru_get_config

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:	Sun, 21 Apr 2013 12:33:34 -0500
From:	Dimitri Sivanich <sivanich@....com>
To:	Dan Carpenter <dan.carpenter@...cle.com>
Cc:	Robin Holt <holt@....com>, linux-kernel@...r.kernel.org,
	kernel-janitors@...r.kernel.org, walter harms <wharms@....de>
Subject: Re: [patch v2] gru: info leak in gru_get_config_info()

Acked-by: Dimitri Sivanich <sivanich@....com>

On Sun, Apr 21, 2013 at 08:01:07PM +0300, Dan Carpenter wrote:
> The "info.fill" array isn't initialized so it can leak uninitialized
> stack information to user space.
> 
> Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
> ---
> v2: style changes
> 
> diff --git a/drivers/misc/sgi-gru/grufile.c b/drivers/misc/sgi-gru/grufile.c
> index 44d273c..0535d1e 100644
> --- a/drivers/misc/sgi-gru/grufile.c
> +++ b/drivers/misc/sgi-gru/grufile.c
> @@ -172,6 +172,7 @@ static long gru_get_config_info(unsigned long arg)
>  		nodesperblade = 2;
>  	else
>  		nodesperblade = 1;
> +	memset(&info, 0, sizeof(info));
>  	info.cpus = num_online_cpus();
>  	info.nodes = num_online_nodes();
>  	info.blades = info.nodes / nodesperblade;
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/