From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 AF8FE2741B5; Wed, 18 Feb 2026 08:50:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771404659; cv=none; b=UrlH9PuWmzdkvgk9/9LUl2jAJe+7FSkjF3PEQLN1ZUITH+tpNDhIVIc83hJUVU+joOBWYstEX7c4vmTiLOes9KeDVgZRMocYRbTG4NjQ3B+mpzFlF8u6HfTQ9itS1yajZh6X1gyraQqMRNAMa0KGY8MdhZ4auK6PhgGekvg4cmY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771404659; c=relaxed/simple; bh=uKsWK5ydRKBav2ITuam+ba0bQ6cMn7NeP3qE6qilKyM=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=VhC+LhNEJi5wn1dFEZg/PRcjkuy1TSUDcV7MCpHKhT4H0DkEeG3XjwgYIkJS93Q1nXwIrBm3qfADr+Dl1Xf/Mw3z5eD0w+OVK6gdh+9tk3IwDNbJvhWvt4h3J/0QmMvb7gmlMgbucK5nQ+twijxgveRr6kFB5TC981xem/Rnfpw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=aPwTxLJN; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="aPwTxLJN" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D4D20C19421; Wed, 18 Feb 2026 08:50:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1771404659; bh=uKsWK5ydRKBav2ITuam+ba0bQ6cMn7NeP3qE6qilKyM=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=aPwTxLJNSF6EMJXOSQcCDhO4T599WEYvjT5Huiw9SIiINYpx83GqLfXkY2eA3Sezk INbs9O6pTfFn5ZZ+F9z8Byp41m43Lzg/sDEFROEky9q+GpzgudFoJjJTcY2XgtLCt5 j6/Ta1u0KBlsRmIzKLHaBInpKieUOSh1voC9g+Up4isoPEchGVuTyDSWpu8livV7T/ pgJHoTVTLUV96xSidBrovc7tXZl3E8cBVGnpvauz4nTJGspaG9H4fwsilLUgZjMr7G nZVcMrsU315ml/XPVn/KYHUsY3yTM+d09SorveCTyuQIWGg+uEuV0U63n2+mMkWEMD Ep12m64Chsi7w== Message-ID: <7c66f175-3637-478f-9d0e-e314bff59ddf@kernel.org> Date: Wed, 18 Feb 2026 09:50:55 +0100 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH net v6] net: nfc: nci: Fix parameter validation for packet data To: Michael Thalmeier , Deepak Sharma , Vadim Fedorenko , Simon Horman , Paolo Abeni , Jakub Kicinski Cc: linux-kernel@vger.kernel.org, netdev@vger.kernel.org, "Lukas K ." , Michael Thalmeier , stable@vger.kernel.org References: <20260218083000.301354-1-michael.thalmeier@hale.at> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 18/02/2026 09:30, Michael Thalmeier wrote: > Since commit 9c328f54741b ("net: nfc: nci: Add parameter validation for > packet data") communication with nci nfc chips is not working any more. > > The mentioned commit tries to fix access of uninitialized data, but > failed to understand that in some cases the data packet is of variable > length and can therefore not be compared to the maximum packet length > given by the sizeof(struct). > > Fixes: 9c328f54741b ("net: nfc: nci: Add parameter validation for packet data") > Cc: stable@vger.kernel.org > Signed-off-by: Michael Thalmeier I am trying to get it retested by syzbot for the original issue, to be sure the original report is still fixed. I sent: Reported-by: syzbot+740e04c2a93467a0f8c8@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=740e04c2a93467a0f8c8 #syz unfix And then followed by Reported+Closes+: #syz test but syzbot does not want to retest it: "This bug is already marked as fixed. No point in testing." Anyone knows how to re-test this against old report? Best regards, Krzysztof