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 EC35D478E5B; Tue, 16 Jun 2026 16:49:17 +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=1781628558; cv=none; b=FidNColyADXEAqN9Z4ZVXZbROABn5wR3sP6WXnGr7HyybEurNHh2Bhdq+0ehXm0xMowv34s73wBdkyuyNsdbpjsOsDOGyDgF7HV+RxnILfUmyb0Wam1TX5/mIsffsyoC0ucqDIkjGmzYLy7WUZ09ZQSv/89gt9lzEZUhI+iV+1s= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781628558; c=relaxed/simple; bh=wFQd39Sd2edORXGdKG/XMAgKnmzrBcBsGyTb5JA9IZk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=iCiHv5r9LXDgS+yVzi1HaWud7hFZwxpsOxvJ0GNkTxQH/xpC40HJjHigyneNdqlRphuKgqWaccJ3nQWBSsujxd+XXjrPmQ8sIwbjOKWrXj1p4cb5SD/ozFkudvMjA5lmZBTk3RS4I+CMHbYjePOAxLZN53NUMwSGyZdHuUpwW7o= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=VIGovMx+; 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="VIGovMx+" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D884D1F000E9; Tue, 16 Jun 2026 16:49:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1781628557; bh=mPVN+z7z40wCi85j0gtSs0HfJ2UqP2CVi8tTg61SvG0=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=VIGovMx+XLS9U0jghPVdTgFoA+Chie7WUrl8418yG6xPgtPRqtW0T5zgyAUlo409/ 9zj04RcA2UQYTfWGc9QzhlZfqCj12EWuTfJzPr2uKPN1gyPuPF6HdGI+InUzCzjLbU +IZUJwE7xwvNT5I7V0a02MTpIHv28m0B7MzCdrA8= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Johan Hovold Subject: [PATCH 6.6 119/452] USB: serial: omninet: fix memory corruption with small endpoint Date: Tue, 16 Jun 2026 20:25:46 +0530 Message-ID: <20260616145123.957468531@linuxfoundation.org> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260616145117.796205997@linuxfoundation.org> References: <20260616145117.796205997@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Johan Hovold commit 60df93d30f9bdd27db17c4d80ed80ef718d7226b upstream. Make sure that the bulk-out buffers are at least as large as the hardcoded transfer size to avoid user-controlled slab corruption should a malicious device report a smaller endpoint max packet size than expected. Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Cc: stable@vger.kernel.org Reviewed-by: Greg Kroah-Hartman Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/omninet.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) --- a/drivers/usb/serial/omninet.c +++ b/drivers/usb/serial/omninet.c @@ -30,6 +30,10 @@ /* This one seems to be a re-branded ZyXEL device */ #define BT_IGNITIONPRO_ID 0x2000 +#define OMNINET_HEADERLEN 4 +#define OMNINET_BULKOUTSIZE 64 +#define OMNINET_PAYLOADSIZE (OMNINET_BULKOUTSIZE - OMNINET_HEADERLEN) + /* function prototypes */ static void omninet_process_read_urb(struct urb *urb); static int omninet_prepare_write_buffer(struct usb_serial_port *port, @@ -55,6 +59,7 @@ static struct usb_serial_driver zyxel_om .description = "ZyXEL - omni.net usb", .id_table = id_table, .num_bulk_out = 2, + .bulk_out_size = OMNINET_BULKOUTSIZE, .calc_num_ports = omninet_calc_num_ports, .port_probe = omninet_port_probe, .port_remove = omninet_port_remove, @@ -131,10 +136,6 @@ static void omninet_port_remove(struct u kfree(od); } -#define OMNINET_HEADERLEN 4 -#define OMNINET_BULKOUTSIZE 64 -#define OMNINET_PAYLOADSIZE (OMNINET_BULKOUTSIZE - OMNINET_HEADERLEN) - static void omninet_process_read_urb(struct urb *urb) { struct usb_serial_port *port = urb->context;