From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 59948432BCD; Mon, 17 Aug 2026 14:46:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786977988; cv=none; b=o2nVBVvIZbnAZT2fSwpxvT3tFvA1kNMopIyERyroeehg8kVVPPCxSF3Lrfg1FkmIEJKLCnecKRt53nnr4E5fDTXltVM5NtEx9B9dlgbIG2cMOv0H60SLRNWpZaxZzoqJwLi0iQgruaNRreDjaHx0AEp7++6JfHnceq+M0NGg8wU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786977988; c=relaxed/simple; bh=X7M+TCils6pfL6RNlfjal/aq9vsMqkNkfbURnKkGe/8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=W8P2QRbTrR04hZul5H9eU8atjuXATM79kjad4mnH1ZMG93TVt8zbdveN9CyLWS7WAya9Vi5pWS9UoDBFCyBlVlUVR/+qsWIo3Qh1WypbzFAjJ11i4MU+PK4wX/nGr2lja55WXx+7hHBvjYpohuOJISeZo2Q4I2KP+NRgkFxzDCw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=2Yb9xKte; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="2Yb9xKte" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B1F1E1F000E9; Mon, 17 Aug 2026 14:46:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1786977987; bh=suJPYTtGW3mIVJBjEpifmES2oqTi08r2H3lUe17U1Wk=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=2Yb9xKte+Vbh9ToYumfxGOtbzTT8NsYD2ZJS3AIx8RuW4mo/3JXLij8pfB7PSD39+ JU/QTECTJB/as7X37vdMpcCt0FdyrPFvSaKJKxeqcxEipb3iQKVvb7zcwXadakWqzN pcZQUa5OOFakJ2riUupbOOCvXsAZ6pQic3pQtVZ4= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Wilken Gottwalt , Guenter Roeck , Sasha Levin Subject: [PATCH 6.12 062/181] hwmon: (corsair-psu) fix possible out-of-bounds access on missing string termination Date: Mon, 17 Aug 2026 15:32:36 +0200 Message-ID: <20260817132537.865136809@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260817132535.394764707@linuxfoundation.org> References: <20260817132535.394764707@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Wilken Gottwalt [ Upstream commit 36c4d73ce05d1d8896c2669eb0730d35a02a2ec1 ] In theory it could be possible that the REPLY_SIZE sized buffers for holding the vendor and product strings could be end up missing the null termination (for example by malicious hardware built on purpose) required by the seq_printf() call. That limits the debugfs printf calls to a maximum string length of REPLY_SIZE. Fixes: d115b51e0e567 ("hwmon: add Corsair PSU HID controller driver") Signed-off-by: Wilken Gottwalt Link: https://lore.kernel.org/r/anLj9gPWRoRDbQBV@monster.localdomain Signed-off-by: Guenter Roeck Signed-off-by: Sasha Levin --- drivers/hwmon/corsair-psu.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/hwmon/corsair-psu.c b/drivers/hwmon/corsair-psu.c index 4ab73bcef1d12..61d1b22bc63ec 100644 --- a/drivers/hwmon/corsair-psu.c +++ b/drivers/hwmon/corsair-psu.c @@ -709,7 +709,7 @@ static int vendor_show(struct seq_file *seqf, void *unused) { struct corsairpsu_data *priv = seqf->private; - seq_printf(seqf, "%s\n", priv->vendor); + seq_printf(seqf, "%.*s\n", REPLY_SIZE, priv->vendor); return 0; } @@ -719,7 +719,7 @@ static int product_show(struct seq_file *seqf, void *unused) { struct corsairpsu_data *priv = seqf->private; - seq_printf(seqf, "%s\n", priv->product); + seq_printf(seqf, "%.*s\n", REPLY_SIZE, priv->product); return 0; } -- 2.53.0