From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794063890; b=wXWMQf370zBnnnbgoLgzfOAe0Bbue6Bn4gTAgrlnQX+SVtXeSbUHZ0qiwBWRzfys5Evx 0eNuZ2ylQwU9o69os/uN+F+j61UyocgUx2IOEUYG58928FGzAHkh9uPFMugpPLly65od+ 4ZR3vCyyi0NdNSam52njLHgiiIuMXUPB0taEG9+TeOkDvQH+aUDxWE/9BWgoJ4DtEmNvZ T2lOpNnRpQvIuCKS86RrPizvHcT5nIBWA72/ZNAEhslULdMK82kwpKIDn/mmO+GMqpgNg oBzj70uzS1v8RTtn5vsHbLmPA3ZOo0X7lnWfgWM8UpEJzXfPaoLjIAJuZsSOBeekONQ== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794063890; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:User-Agent:X-stable:X-Patchwork-Hint: MIME-Version:Content-Transfer-Encoding; bh=69LcYHT1BzqwLgMJx2j2ks3vAHllUvz7f6aGiskFrXA=; b=bFPhV3QKOqEb8bSLfT/CFw5sdJ55iLkVMjwSjBdi1a9qMGaf3pN+cnjYj0yUTKMe500m fQGDenETa5/boFzzIehfwCdbjzMAB+ao/258cdWD6yfb1RDFuHWVj7s74utfCgqb/6IxU xfCez2ON7tKDfh5M1xNfXlbpKthUUoyWuoSYJEiCUh2yk4QopYCIn66ZUcSlip0ynCntF BG7cWh9Qd8ZJfmQ2/5kZb6llQrtkHXjTPgB2gToFcV6VCcfZ1VHgA91CimlvBD+chcQqq jqjdOPhQng9IysDR7T/qC8ypd4sbEH7bmC5etnAd4/y3LQ9/qL67DRWyhe4zY/Td9WQ== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=vKuyasNH; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 04C80606B8B4; Sat, 7 Nov 2026 15:04:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=vKuyasNH Received: by smtp.kernel.org (Postfix) with ESMTPSA id A6CA11F0089F; Sat, 7 Nov 2026 15:04:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1794063889; bh=69LcYHT1BzqwLgMJx2j2ks3vAHllUvz7f6aGiskFrXA=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=vKuyasNHO+UYOqFZtYo1hA/V2rAJkZO3CMnSR50q0D3CMo+/8cfcvNbjwXvZjvPEz 3PuS9herd8U821s8Qwowv9bnU1TYHtGhIpM0bXm58NYFaUpBCuMJEF/xHledKpflPI s7NrIUv7c4KXLycW900L3yBJiym8NATgA+7npZPo= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Shengzhuo Wei , Hans Verkuil , Sasha Levin Subject: [PATCH 7.3 0093/1257] media: go7007: bound EZ-USB I2C transfers to the usb_buf size Date: Sat, 7 Nov 2026 08:39:49 -0500 Message-ID: <20261107134941.934199734@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261107134939.434104957@linuxfoundation.org> References: <20261107134939.434104957@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore X-Mailing-List: stable@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 7.3-stable review patch. If anyone has any objections, please let me know. ------------------ From: Shengzhuo Wei [ Upstream commit 816c4628b23e8c3d925978433f4dd1a13620c01b ] go7007_usb_i2c_master_xfer() copies msgs[i].len bytes into go->usb_buf, a 16-byte buffer embedded in struct go7007, without any length check. The adapter declares no transfer limits, so an SMBus block transfer issued through /dev/i2c-N can write up to 34 bytes into it and corrupt the struct fields that follow the buffer. Bound the transfer size with i2c_adapter_quirks so the I2C core rejects oversized messages before they reach the driver. Fixes: 7955f03d18d1 ("[media] go7007: move out of staging into drivers/media/usb.") Cc: stable@vger.kernel.org Signed-off-by: Shengzhuo Wei Assisted-by: GLM:5.3 Signed-off-by: Hans Verkuil Signed-off-by: Sasha Levin --- drivers/media/usb/go7007/go7007-usb.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/media/usb/go7007/go7007-usb.c b/drivers/media/usb/go7007/go7007-usb.c index c0cb92fa6ab94..867548d655b3f 100644 --- a/drivers/media/usb/go7007/go7007-usb.c +++ b/drivers/media/usb/go7007/go7007-usb.c @@ -1029,10 +1029,16 @@ static const struct i2c_algorithm go7007_usb_algo = { .functionality = go7007_usb_functionality, }; +static const struct i2c_adapter_quirks go7007_usb_quirks = { + .max_write_len = 12, + .max_read_len = 15, +}; + static struct i2c_adapter go7007_usb_adap_templ = { .owner = THIS_MODULE, .name = "WIS GO7007SB EZ-USB", .algo = &go7007_usb_algo, + .quirks = &go7007_usb_quirks, }; /********************* USB add/remove functions *********************/ -- 2.53.0