From patchwork Sat Oct 5 11:58:57 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mikhail Lobanov X-Patchwork-Id: 13823256 Received: from mail.rosalinux.ru (mail.rosalinux.ru [195.19.76.54]) (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 61D0314F9D5; Sat, 5 Oct 2024 12:00:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=195.19.76.54 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728129612; cv=none; b=VdqKhW624RENGWASf+IV8377EA4hmArFzWiRPdD9HcuvbqlXZ7udfKX+2kdnoIk2lcgpHKAXHuZAXIfrbFIVS5IDrEfTfv5ZPPBqNSxcZmU/u47ggUXtefk2cQq1h0emg5eqg6ncDWb62LTqenx/PuU0Tjhqup6O35ULtobJWak= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728129612; c=relaxed/simple; bh=lgjjzW8JhomFfhqNJl60GVevaG2TRoCJ1RUSqhu+/PI=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=VGUTu1Cr14Zp747Z3fCAVGiQf/rxkFNxdRzF8SbiQWO5rhvg2khUJGmV3E5GTbqZA6LH2GKVBxnCRCfNk0wFgQYgzTKf3t0xlCsTlSM0HcxGMTZjvSqnFbwl/fHMIupTNQwtIxekneJw2VhRGt0lOABAHSRNwnY59GONGIabZpw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=rosalinux.ru; spf=pass smtp.mailfrom=rosalinux.ru; dkim=pass (2048-bit key) header.d=rosalinux.ru header.i=@rosalinux.ru header.b=EgnoNtMA; arc=none smtp.client-ip=195.19.76.54 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=rosalinux.ru Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=rosalinux.ru Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=rosalinux.ru header.i=@rosalinux.ru header.b="EgnoNtMA" Received: from localhost (localhost [127.0.0.1]) by mail.rosalinux.ru (Postfix) with ESMTP id 20E6BDB761279; Sat, 5 Oct 2024 15:00:05 +0300 (MSK) Received: from mail.rosalinux.ru ([127.0.0.1]) by localhost (mail.rosalinux.ru [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id eoG0vcNe2Ldw; Sat, 5 Oct 2024 15:00:05 +0300 (MSK) Received: from localhost (localhost [127.0.0.1]) by mail.rosalinux.ru (Postfix) with ESMTP id DA1A3E2D87380; Sat, 5 Oct 2024 15:00:04 +0300 (MSK) DKIM-Filter: OpenDKIM Filter v2.10.3 mail.rosalinux.ru DA1A3E2D87380 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rosalinux.ru; s=1D4BB666-A0F1-11EB-A1A2-F53579C7F503; t=1728129604; bh=r1ZRAdOPsZ6V3qrG7zP/y2ZKnPDaC4zWXBpyCVEL9mo=; h=From:To:Date:Message-ID:MIME-Version; b=EgnoNtMANl7XTY6tSlxGbZN1cnfhlgvS1f2uqP5enUOSoAybdLk9BGw59EN/UAXRu ClV9zWaSjT7zlC3ohOYPBg81EJG/1afnY8ZNyOZOQoV7fHfA0cPDx5Z3uP/BOLookF 1GKRa6V8CIPl61pHhuLdvhd1DyAIv9HtGBzpbj1aE2Op4jB0vRHxOl/SUkgWrV5flO E+hsaXFDT67M/10U5TqjoQj5gqm1WfMqVk8MXaisWKu8eCHeuFSHt8TLtFMij1d+Rl jCsuasG1R7ZlaUThKuNS5DNiLRaQLHku3FdG0tWY5pzdXzBZxmkBnCVGjiLaaqi66s cqlHH88kQkajg== X-Virus-Scanned: amavisd-new at rosalinux.ru Received: from mail.rosalinux.ru ([127.0.0.1]) by localhost (mail.rosalinux.ru [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id jvuZZ7dH1Y9h; Sat, 5 Oct 2024 15:00:04 +0300 (MSK) Received: from localhost.localdomain (unknown [213.87.162.215]) by mail.rosalinux.ru (Postfix) with ESMTPSA id CE044DB761279; Sat, 5 Oct 2024 15:00:03 +0300 (MSK) From: Mikhail Lobanov To: Jacopo Mondi Cc: Mikhail Lobanov , Mauro Carvalho Chehab , Sakari Ailus , Laurent Pinchart , Hans Verkuil , Guennadi Liakhovetski , linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, lvc-project@linuxtesting.org, Aleksandr Burakov , Sergey Shtylyov Subject: [PATCH v3] media: rj54n1cb0c: possible integer overflow fix Date: Sat, 5 Oct 2024 07:58:57 -0400 Message-ID: <20241005115859.13273-1-m.lobanov@rosalinux.ru> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 An integer overflow may occur due to arithmetic operation (multiplication) between value '314572800' and variable 'resize', where the value comes from '12 * RJ54N1_MAX_WIDTH * (1 << 14)' and when 'resize' is equal to 16319. Found by Linux Verification Center (linuxtesting.org) with SVACE. Fixes: a6b5f2008a3d ("V4L/DVB (13661): rj54n1cb0c: Add cropping, auto white balance, restrict sizes, add platform data") Signed-off-by: Aleksandr Burakov Signed-off-by: Mikhail Lobanov Signed-off-by: Sergey Shtylyov --- v1->v2: updated multiplication operation to use shorthand assignment for improved code readability link to v1: https://lore.kernel.org/lkml/20240917140454.7880-1-a.burakov@rosalinux.ru/ v2->v3: the subsystem prefix has been updated to 'media: rj54n1cb0c:'. link to v2: https://lore.kernel.org/lkml/20241004121924.27174-1-m.lobanov@rosalinux.ru/ drivers/media/i2c/rj54n1cb0c.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/media/i2c/rj54n1cb0c.c b/drivers/media/i2c/rj54n1cb0c.c index a59db10153cd..a612ec1e7157 100644 --- a/drivers/media/i2c/rj54n1cb0c.c +++ b/drivers/media/i2c/rj54n1cb0c.c @@ -776,8 +776,8 @@ static int rj54n1_sensor_scale(struct v4l2_subdev *sd, s32 *in_w, s32 *in_h, } /* Antiflicker */ - peak = 12 * RJ54N1_MAX_WIDTH * (1 << 14) * resize / rj54n1->tgclk_mhz / - 10000; + peak = 12 * RJ54N1_MAX_WIDTH * resize / rj54n1->tgclk_mhz / 10000; + peak *= 1 << 14; peak_50 = peak / 6; peak_60 = peak / 5;