linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Marcel Holtmann <marcel@holtmann.org>
To: Len Baker <len.baker@gmx.com>
Cc: Kees Cook <keescook@chromium.org>,
	Johan Hedberg <johan.hedberg@gmail.com>,
	Luiz Augusto von Dentz <luiz.dentz@gmail.com>,
	Adam Sampson <ats@offog.org>,
	linux-bluetooth@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-hardening@vger.kernel.org
Subject: Re: [PATCH v2] drivers/bluetooth: Remove all strcpy() uses
Date: Thu, 29 Jul 2021 13:47:25 +0200	[thread overview]
Message-ID: <B9CF4857-98A5-418D-B689-A13A230A6641@holtmann.org> (raw)
In-Reply-To: <20210724122152.7133-1-len.baker@gmx.com>

Hi Len,

> strcpy() performs no bounds checking on the destination buffer. This
> could result in linear overflows beyond the end of the buffer, leading
> to all kinds of misbehaviors. The safe replacement is strscpy() but in
> this case it is better to use the scnprintf to simplify the arithmetic.
> 
> This is a previous step in the path to remove the strcpy() function
> entirely from the kernel.
> 
> Signed-off-by: Len Baker <len.baker@gmx.com>
> ---
> Changelog v1 -> v2
> - Add spaces to the "plus" sign.
> - Use the correct size for the fw_dump_ptr buffer (Adam Sampson)
> 
> drivers/bluetooth/btmrvl_sdio.c | 29 ++++++++++++++---------------
> 1 file changed, 14 insertions(+), 15 deletions(-)

patch has been applied to bluetooth-next tree.

Regards

Marcel


      reply	other threads:[~2021-07-29 11:47 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-24 12:21 [PATCH v2] drivers/bluetooth: Remove all strcpy() uses Len Baker
2021-07-29 11:47 ` Marcel Holtmann [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=B9CF4857-98A5-418D-B689-A13A230A6641@holtmann.org \
    --to=marcel@holtmann.org \
    --cc=ats@offog.org \
    --cc=johan.hedberg@gmail.com \
    --cc=keescook@chromium.org \
    --cc=len.baker@gmx.com \
    --cc=linux-bluetooth@vger.kernel.org \
    --cc=linux-hardening@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=luiz.dentz@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;
as well as URLs for NNTP newsgroup(s).