From: Jens Axboe <axboe@kernel.dk>
To: Vasiliy Kulikov <segooon@gmail.com>
Cc: kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] block: ioctl: fix information leak to userland
Date: Mon, 08 Nov 2010 13:42:57 +0000 [thread overview]
Message-ID: <4CD7FE61.4000606@kernel.dk> (raw)
In-Reply-To: <1288882096-13456-1-git-send-email-segooon@gmail.com>
On 2010-11-04 15:48, Vasiliy Kulikov wrote:
> Structure hd_geometry is copied to userland with 4 padding bytes
> between cylinders and start fields uninitialized on 64-bit platforms.
> It leads to leaking of contents of kernel stack memory.
>
> Currently there is no memset() in real implementations of getgeo()
> in drivers/block/, so it makes sense to have memset() in blkdev_ioctl().
Thanks, applied.
--
Jens Axboe
prev parent reply other threads:[~2010-11-08 13:42 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-04 14:48 [PATCH] block: ioctl: fix information leak to userland Vasiliy Kulikov
2010-11-08 13:42 ` Jens Axboe [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=4CD7FE61.4000606@kernel.dk \
--to=axboe@kernel.dk \
--cc=kernel-janitors@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=segooon@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox