From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from flow-b1-smtp.messagingengine.com (flow-b1-smtp.messagingengine.com [202.12.124.136]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 02A2C499F36 for ; Mon, 19 Oct 2026 08:54:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=202.12.124.136 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1792400051; cv=none; b=axeiMuNJjabtpscweYNS3/JteNkvO0ZewDJ7I0q4/cz6CFly0C4jXb0W0bDalKBLE8OzajWeTnd1lI0rOGuTu/LBUInF838WB2vthUV1AyfRFJHsI3LaK2ilfcK1FMpo5pVdwB1IAabVXbgAktgY0G/GEFPT9caEupRnkFXXmL0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1792400051; c=relaxed/simple; bh=s0h42F1lZrfKQV3xJxTI1fXSkem6mtfA5ZtwhL8W5+0=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=itbQ3zV4IVb+vqKVlzhFJ15jzHPmIMvBOrh+oUSBHCxFtOFq84uFUGbxefBwEn/Mnl/Ul9SeS/rgzDhO4tfLrQTH+HptQDQKyfHojFfg+hphgI/2OY95AU15lXErxofFvTZNfJJ5flw+AfBGLLq+fCQwP3tVbOYN1xZ7+DovaOg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=kroah.com; spf=pass smtp.mailfrom=kroah.com; dkim=pass (2048-bit key) header.d=kroah.com header.i=@kroah.com header.b=OVJBhzyz; dkim=pass (2048-bit key) header.d=messagingengine.com header.i=@messagingengine.com header.b=LJCuDaB9; arc=none smtp.client-ip=202.12.124.136 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=kroah.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=kroah.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kroah.com header.i=@kroah.com header.b="OVJBhzyz"; dkim=pass (2048-bit key) header.d=messagingengine.com header.i=@messagingengine.com header.b="LJCuDaB9" Received: from phl-compute-03.internal (phl-compute-03.internal [10.202.2.43]) by mailflow.stl.internal (Postfix) with ESMTP id 151021300471 for ; Mon, 19 Oct 2026 04:54:08 -0400 (EDT) Received: from phl-frontend-04 ([10.202.2.163]) by phl-compute-03.internal (MEProxy); Mon, 19 Oct 2026 04:54:08 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kroah.com; h=cc :cc:content-type:content-type:date:date:from:from:in-reply-to :in-reply-to:message-id:mime-version:references:reply-to:subject :subject:to:to; s=fm2; t=1792400047; x=1792407247; bh=s0h42F1lZr fKQV3xJxTI1fXSkem6mtfA5ZtwhL8W5+0=; b=OVJBhzyzaBLcB7/1yIs7vivDBh NPIjyHnrwgWvSO76cafUV+b4L5bdfIvTEym94+D8qMKJeSdubIHM9UJpPe5Ai8sJ 0Madw0ec0BPipSMwGLpkXaZRytg4rvaSrdi8iNA+kK6NClFtaOlgIYVYAlMGRAWO 4tTCWftQDFW+THwZFNqS5o/u5sLTCCZ+I7zFGhGyzqVb7Bsx4sE2XWrxFYHlagga xSh4mI3uHsodHRIWVf+4kr53mqWh2ghtpCFMY+y47LuR7TZ620A76V+tTKTMV99s IQXhUcj8VnaZkXiPVOB2zlc8YX5C303lkjZL158OqthN2wZkvn7NTQXh84Hw== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:cc:content-type:content-type:date:date :feedback-id:feedback-id:from:from:in-reply-to:in-reply-to :message-id:mime-version:references:reply-to:subject:subject:to :to:x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s=fm2; t= 1792400047; x=1792407247; bh=s0h42F1lZrfKQV3xJxTI1fXSkem6mtfA5Zt whL8W5+0=; b=LJCuDaB9B5G1z4hQmTGw8fY9toMatQjtBixrMZZyxyAd4veFalR +l1xqHBwyMctN5riaUK/7sG8QIy7irPOGdDs0qKxpdfaKIZRlCVddjLvgjIh8oMO oraFka1iUHpp+KQLYz5A2CCTWd3Dh9rNEPAlwQIirbcEZZ9nX4IvDbsXl8HA+Hj4 XRtLvaMHK84XCedRmrkLJLvDRXoj9aFxsLN/v4RSYmR3zTgAaJpJdYWM0odSY/od 22UqSu2CWNaBXczT86MGZBIlR6pOmZDsIjHnUUNfSq2a2KzFFvIym7uXNN115utZ IQv1uDDf1TLT9hjZltNRgeR+vtyV7Cas5VQ== X-DKIM2-Info: draft=ietf-dkim-dkim2-spec-06; repo=github.com/dkim2wg/interop; date=2026-10-08; sw=lmtpprox; action=sign d=kroah.com a=rsa-sha256; DKIM2-Signature: i=1; m=1; t=1792400047; d=kroah.com; mf=PGdyZWdAa3JvYWguY29tPg==; rt=PG5ldGRldkB2Z2VyLmtlcm5lbC5vcmc+; s=fm2:rsa-sha256:lLekPtOgh9EENKSLx9DsXJr2OoGxW4Qx98bhZBAGQrpFuq0 VGe7+v1Gh++twpCaOx4AztV72UFYRDZa5P7AnW3eR24Qjv3srPCP8/sQEnV8PpLa EN/5pTtQmDFA5lMnvG3dQbz1S0uISLhIM4bcrrhYCPDbldqZ4NazqJHtoFQ0HFCl hW0ycdNROSANO0RG7IL/lp13RjTSEi43mgs43FmGIuQ5UYCkNxRt2svxKaV6chKB qyidrRsYw8k437ePMt8WIOcsyt07no9hjyBKSdIdLXjV2a4VPrmkAMCxS08jznWy gyAsTa9HefI32CCC6biXx284Sldxa+PmFa3cXxA==; X-DKIM2-Info: draft=ietf-dkim-dkim2-spec-06; repo=github.com/dkim2wg/interop; date=2026-10-08; sw=lmtpprox; action=mi-m=1; hc=12; hn=cc,content-disposition,content-type,date,feedback-id,from, in-reply-to,message-id,mime-version,references,subject,to; Message-Instance: m=1; h=sha256:9D9cuvixjsrzA91E8Vh6c5TIaNeU0o52gGMb/xNiTxY=:s0h42F1lZrfKQV3xJxTI1fXSkem6mtfA5ZtwhL8W5+0=; X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: dmFkZTFI49Iqxxv7cRs47BhKcW33yl0sPHw8NjeMputSVefZXoC9ioiGoKQK7r05AXEgKe wB6DV8nhv/w9kCWezeGPUPO+7KEJ5aYU4h70bVLz9KJI443Curh4LFxFMbiwdM9kOoIaSq vM28RDZ8ccUWPscCzB95TujvaOQhJDr5DDrjfwy1GudwsGoX8qpsWgzUwzODIr2eoYifCi 3hsAJ4pzzprHA7vneVE0N1EZP9QrAv+TnDRlxkFqX16pac7L+b4PYATTy4WY0/0ZxO1ofd aGPMBHrJlVHJ89gDHS1nj3FuGyPFEjvH85Tb9Z4RjyXnjIhXEG8Ypmd1eZwcOu2bQm9IJi UQ0Rc4JNHxO6wqzop582e5HO+8xmwACE8qxWxogrpo5TVg0ONEpdzhW8Dmd+gu/DljN7pz 7+5GtbpggLZZZhY0/9K0BVuZNEtATXNdqiUNYIjAphmUACAwId6QiLLrmkREb8fwNVAz8J J7sdl78gokfA8HjwWWqw3tzleMU4dqmuHw1V53BrM0+fid5SrhgpXPuF+LQjCbDu7Yuhli D27tdZTVKRDrghjThGgcth/h7kjP/yeG9U+fjJBO9KmdQ2dwst4wbNsE55bbL0IV2TDnz9 MoWT2Wk24bz6eoPFx1VLQvvsupxVbBKlHgUTMhTGvkYSD3bQsjJB79PlDxzA X-ME-Proxy: Feedback-ID: i787e41f1:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Mon, 19 Oct 2026 04:54:06 -0400 (EDT) Date: Mon, 19 Oct 2026 10:54:05 +0200 From: Greg KH To: Pranjal Kumar Singh Cc: cve@kernel.org, netdev , Pablo Neira Ayuso , Jozsef Kadlecsik , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , "Michael S. Tsirkin" , Willem de Bruijn , Paulos Yibelo , openvswitch , stable@vger.kernel.org, "fw@strlen.de" Subject: Re: Kernel bug report: unguarded deferred skb_checksum_help() writes corrupt the previously-validated IPv6 fixed header (IPv6 counterpart of commit 6785011f8b16, "ipv4: validate checksum_start before completing checksum") Message-ID: <2026101930-magnify-motocross-6262@gregkh> References: Precedence: bulk X-Mailing-List: netdev@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: On Mon, Oct 19, 2026 at 02:13:04PM +0530, Pranjal Kumar Singh wrote: > Bug report and evidence > ----------------------- > Dear attachments, all under ipv6-csum-start-submission.zip: For obvious reasons, you don't want us opening binary attachments. Always submit everything in plain text, as our documentation kindly asks you to. thanks, greg k-h