From mboxrd@z Thu Jan  1 00:00:00 1970
From: Leon Romanovsky <leon@kernel.org>
Date: Mon, 04 Sep 2017 13:56:22 +0000
Subject: Re: [PATCH][V2] RDMA/nes: do not leak uninitialized resp.reserved to userspace Content-Type: text/pl
Message-Id: <20170904135622.GA1070@mtr-leonro.local>
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List-Id: <kernel-janitors.vger.kernel.org>
References: <20170904133705.3980-1-colin.king@canonical.com>
In-Reply-To: <20170904133705.3980-1-colin.king@canonical.com>
To: Colin King <colin.king@canonical.com>
Cc: Faisal Latif <faisal.latif@intel.com>, Doug Ledford <dledford@redhat.com>, Sean Hefty <sean.hefty@intel.com>, Hal Rosenstock <hal.rosenstock@gmail.com>, linux-rdma@vger.kernel.org, kernel-janitors@vger.kernel.org, stable@vger.kernel.org, linux-kernel@vger.kernel.org


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On Mon, Sep 04, 2017 at 02:37:05PM +0100, Colin King wrote:
> From: Colin Ian King <colin.king@canonical.com>
>
> resp.reserved has not been initialized and so the copy_to_user (via
> ib_copy_to_udata) is copying uninitialized data from the stack back
> to user space which is a potential information leak. Fix this by
> initializing all of resp to zero.
>
> V2: Initialize all of the struct rather than just resp.reserved as
> suggested by Leon Romanovsky.

Small nitpick, it is better to put changelog under "---" marker, so
it won't be visible in the git log.

Thanks
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>

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