From: Florian Westphal <fw@strlen.de>
To: netfilter-devel@vger.kernel.org
Subject: Re: [PATCH nf] netfilter: nft_payload: restrict checksum offsets to known values
Date: Mon, 24 Aug 2026 21:56:46 +0200 [thread overview]
Message-ID: <aoyh_i2BhyOiMTpk@strlen.de> (raw)
In-Reply-To: <20260824192843.28439-1-fw@strlen.de>
Florian Westphal <fw@strlen.de> wrote:
> We need to prevent userspace from corrupting e.g. tcp->doff, because
> many locations in conntrack and conntrack helpers rely on
> nf_conntrack_in() having validated the packet headers.
> nft_payload allows to alter headers later which invalidates this
> assumption.
https://sashiko.dev/#/patchset/20260824192843.28439-1-fw%40strlen.de
Can't make sense of it, afaics this patch is fine.
next prev parent reply other threads:[~2026-08-24 19:56 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-24 19:28 [PATCH nf] netfilter: nft_payload: restrict checksum offsets to known values Florian Westphal
2026-08-24 19:56 ` Florian Westphal [this message]
-- strict thread matches above, loose matches on Subject: below --
2026-09-04 9:57 Florian Westphal
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