From: Florian Westphal <fw@strlen.de>
To: Justin Stitt <justinstitt@google.com>
Cc: Pablo Neira Ayuso <pablo@netfilter.org>,
Jozsef Kadlecsik <kadlec@netfilter.org>,
Florian Westphal <fw@strlen.de>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
linux-hardening@vger.kernel.org,
Kees Cook <keescook@chromium.org>,
netfilter-devel@vger.kernel.org, coreteam@netfilter.org,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 7/7] netfilter: xtables: refactor deprecated strncpy
Date: Wed, 9 Aug 2023 22:20:54 +0200 [thread overview]
Message-ID: <20230809202054.GC3325@breakpoint.cc> (raw)
In-Reply-To: <20230809-net-netfilter-v2-7-5847d707ec0a@google.com>
Justin Stitt <justinstitt@google.com> wrote:
> Prefer `strscpy_pad` as it's a more robust interface whilst maintaing
> zero-padding behavior.
>
> There may have existed a bug here due to both `tbl->repl.name` and
> `info->name` having a size of 32 as defined below:
> | #define XT_TABLE_MAXNAMELEN 32
>
> This may lead to buffer overreads in some situations -- `strscpy` solves
> this by guaranteeing NUL-termination of the dest buffer.
I don't think we need to use _pad here.
prev parent reply other threads:[~2023-08-09 20:21 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-08-09 1:06 [PATCH v2 0/7] netfilter: refactor deprecated strncpy Justin Stitt
2023-08-09 1:06 ` [PATCH v2 1/7] netfilter: ipset: " Justin Stitt
2023-08-09 20:19 ` Florian Westphal
2023-08-09 21:40 ` Justin Stitt
2023-08-09 21:54 ` Jan Engelhardt
2023-08-10 19:07 ` Kees Cook
2023-08-09 21:58 ` Florian Westphal
2023-08-09 22:47 ` Justin Stitt
2023-08-09 1:06 ` [PATCH v2 2/7] netfilter: nf_tables: " Justin Stitt
2023-08-09 1:06 ` [PATCH v2 3/7] " Justin Stitt
2023-08-09 1:06 ` [PATCH v2 4/7] netfilter: nft_meta: " Justin Stitt
2023-08-09 1:06 ` [PATCH v2 5/7] netfilter: nft_osf: " Justin Stitt
2023-08-09 20:21 ` Florian Westphal
2023-08-09 1:06 ` [PATCH v2 6/7] netfilter: x_tables: " Justin Stitt
2023-08-09 20:20 ` Florian Westphal
2023-08-09 1:06 ` [PATCH v2 7/7] netfilter: xtables: " Justin Stitt
2023-08-09 20:20 ` Florian Westphal [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=20230809202054.GC3325@breakpoint.cc \
--to=fw@strlen.de \
--cc=coreteam@netfilter.org \
--cc=davem@davemloft.net \
--cc=edumazet@google.com \
--cc=justinstitt@google.com \
--cc=kadlec@netfilter.org \
--cc=keescook@chromium.org \
--cc=kuba@kernel.org \
--cc=linux-hardening@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=netdev@vger.kernel.org \
--cc=netfilter-devel@vger.kernel.org \
--cc=pabeni@redhat.com \
--cc=pablo@netfilter.org \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.