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Fri, 15 May 2026 04:48:53 -0700 (PDT) From: Qi Tang To: fw@strlen.de Cc: netfilter-devel@vger.kernel.org, netdev@vger.kernel.org, pablo@netfilter.org, herbert@gondor.apana.org.au, michael.bommarito@gmail.com, lyutoon@gmail.com, Qi Tang Subject: Re: [RFC] netfilter: disable payload mangling in userns Date: Fri, 15 May 2026 19:48:48 +0800 Message-ID: <20260515114848.1105927-1-tpluszz77@gmail.com> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260515100411.3141-1-fw@strlen.de> References: <20260515100411.3141-1-fw@strlen.de> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit I agree with the userns block. I'll keep pushing the five consumer-side bounds-check patches: root in init userns can still install the same payload-set rule and trigger the same OOB at the re-read sites, so the underlying bug fix is still worth landing. None of the five sites overlap with the relax wishlist (saddr/ daddr, transport, linklayer). Same class showed up in an earlier patch: https://lore.kernel.org/netdev/20260514035802.1540395-1-tpluszz77@gmail.com/ These five are unlikely to be all of them; we think the consumer side warrants a broader audit. Thoughts? Qi