From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wr1-f48.google.com (mail-wr1-f48.google.com [209.85.221.48]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A0ADA421A0F for ; Tue, 26 May 2026 18:27:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.221.48 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779820064; cv=none; b=G0//NuLO6uuxa2AgJ4UWwdGdg0iSjtU5JblrU/CP0f8Ztsq6tuM9QPogrgiiWyXct70YM2pHNBWDaZgFDuteMNCgpqC+Be/xoUrofd/ZNVSTbVdCvQv68Z24o1INatTXVnUmNgILFA+RYUl8lWqnYPiF5vsLQWxLOoGXjUa7ZW0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779820064; c=relaxed/simple; bh=qnEyiN5u94/41O9QO9WxqSZ7r8D6BDUT3NnBsTYeLmM=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=uuyxRmA8dCz/o4XARjUdGcwdosczHJH9k6cO0n02aevUvL+Z8pIQhd/3NM3JRPTYtwBAIcbdNrx5KvJL6t9V4owPpbLhPkI1008uhiu/dMTkmgWc57o63swX2V62D/Jtw951N2hx6SZXucIEVdv8zDxMvCqV3PQmvyfvPJ6E7Uw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=debian.org; spf=pass smtp.mailfrom=gmail.com; arc=none smtp.client-ip=209.85.221.48 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=debian.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Received: by mail-wr1-f48.google.com with SMTP id ffacd0b85a97d-44c350a5b87so6488758f8f.3 for ; Tue, 26 May 2026 11:27:42 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1779820060; x=1780424860; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-gg:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=v0Xjm65d4RA9kC6fH+CTvtbYudzgt6xtf0Gx9rb/6JI=; b=TIwJJqrDunI1AleIhzJ1Xog9Whf6vaMmT3y5lk+oKuHTPKol0NGD0uks2xkmksHjbZ 2ZAMtt6vLeU15jcp4NlbQJ46F2lW8uDPzf0YyZ93RbGa8rzMW3vG+bGXg11ymQmDjvO+ jfQjQdIj6euXTilxVgQjLGqVcPpGFRwGsAY2YD2MCjocBWRX5wX5WpQzqA9uGS8zTfCc yxmCXcnZSdtA2b+7P279F5KD8XSphU6KrXPWQEJeOCt0y7oUdsgwWKFHEjc0nxhIMNLd 18ygXYMFZJEAkBAokzq0yLFdLbAiLMGTwXDWjK2tIPi3x2FEv3T49smTJ/C7Pf+vF4iu wppQ== X-Forwarded-Encrypted: i=1; AFNElJ++YlpRc/+F0gG03v5mWKAOilsDZ08yPGi7BcUE0vjYpDFi5RFRAxm9jIZos0+XO7PM5roczRiUcE44zBg=@vger.kernel.org X-Gm-Message-State: AOJu0Yw4BCJ6v1t4nt1RMsvZsJlDUVlIuiCQ3jULANDc0+o9zRvnWRsh Pe8IFSR6M5+NojGBCJaQNMbw++B0ifUOv0+NoXJwAk+fIU71Iau5zzJk X-Gm-Gg: Acq92OG8DAECRAyq1tQWsCAoNgRateqqBytQUuJs8Sh2i+WpWRjhJKVXDuXynhledlC +8QWNPT7RRCnmjVrj/J8O1qG+6qB4vGPkU5ezOi19zDu/FljAJtiVfO2Tg213VYf2VhvItDf3jG p3LqKm9ce1CmjzJRs1g8aHuf6TVxwuUUEwUHfgYrFYcchO31skvsklSaFlOcr2ZGa9pTtlsCU0M PeZUCGQC0WpsoIfnbyLANslWxToCAZPrLjNm0jOURERezh8/iK/xYgNsYdSpWqqOb7sVHLgHJ2u GpxZNelXkyfazO8TjjvOgD7wwiQCoDQsMaCTBotEaOjkYWfgcvbrUQEF4eiQpgIghmRBTQg5Yl0 6OWCGII+WsGnBqaXqR/UkdTK/DUhOF/p2WdiuB0OBTvcRGF9TOVYPJKrkpQWJqnenvf+ygZQLMU 5Mil0uhz3tht7KhV7vdDZA6h8i09Idr2MXLvKA X-Received: by 2002:a05:6000:470a:b0:43d:3004:5fef with SMTP id ffacd0b85a97d-45eb367fb4dmr26397188f8f.7.1779820060171; Tue, 26 May 2026 11:27:40 -0700 (PDT) Received: from gmail.com ([62.197.47.167]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-45edb557545sm91361f8f.12.2026.05.26.11.27.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 26 May 2026 11:27:39 -0700 (PDT) Date: Tue, 26 May 2026 19:27:39 +0100 From: Breno Leitao To: Simon Horman Cc: "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Shuah Khan , David Heidelberg , Samuel Ortiz , linux-kernel@vger.kernel.org, netdev@vger.kernel.org, linux-kselftest@vger.kernel.org, oe-linux-nfc@lists.linux.dev, kernel-team@meta.com Subject: Re: [PATCH net v2 0/2] nfc: llcp: two fixes for nfc_llcp_getsockopt() Message-ID: References: <20260521-fix_llc-v2-0-ab44cc09179c@debian.org> <20260526173351.GB2256768@horms.kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260526173351.GB2256768@horms.kernel.org> Hello Simon, On Tue, May 26, 2026 at 06:33:51PM +0000, Simon Horman wrote: > > Changes in v2: > > - Guard the length check against negative optlen (Simon Horman / sashiko). > > - Add patch 2: move llcp_sock->local read inside lock_sock(sk) to close > > a UAF race with llcp_sock_bind() (Simon Horman / sashiko). > > - Link to v1: https://patch.msgid.link/20260513-fix_llc-v1-1-33c76f931ff6@debian.org > > Thanks for the update. > > There is an AI-generated review of this patch on sashiko.dev. > It looks like it flags pre-existing issue that doesn't directly > impact the intent of this patch-set. So I don't believe it should delay > progress of this patch-set. Agree, and looking at what sashiko raised, it seems reasonable, I would say the state check in llcp_sock_connect() is incomplete, and llcp_sock_connect() should refuse non-LLCP_CLOSED states. I will send an independent patch later, if we don't hear any concern from anyone else. Thanks for the review, --breno