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 1CB513D091A; Tue, 16 Jun 2026 18:10:45 +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=1781633446; cv=none; b=uXy0mWZwB3XME2Z2zn4nEE5C2qWvzQZKHOTOMDCaWRP39Xza98qv2uqhN9IY+SZVQqiS1qf2CxvohmQcE7qrMA4JRh7nm4yzhL5enYbPK3e5MQWcSH3mQiGL95AJnExLuLV0U7inyQDdFZQMEWuurTcyU26HANva0ItF9qjsPNw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781633446; c=relaxed/simple; bh=aGTjBl+AqMkGNPeaPbyfQnL4l4BVi/zhmLVqcoYctHY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=UgsG0MOrucYResaREz1EwxJeSIybD9z/V3MoyyZrUuMCj+aUHxSc1EIM5/hEFgbKKOqI/oGSm7QoS6BqTt2ZOEhiXiWLKph2rYZfiE3ZxiQl2XM5papxjLx22R9hqALc6R9rlEGgHIMKdQkGyRGgOVoVBhLo6ir21weMPlwesks= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=Kit+4cKA; 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="Kit+4cKA" Received: by smtp.kernel.org (Postfix) with ESMTPSA id ECC461F000E9; Tue, 16 Jun 2026 18:10:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1781633445; bh=dzMZc3BOW4XndSwEbPTGerkbcUVVUL5Bz90qKuDfgcY=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=Kit+4cKAFyRxiW+ZRUusrMVmKlXDMxd68J4JfgnEylkakCm4UE7c+mTpipjlDMV0H zSCfKt312LYp8xgyVuoWkmkY8lqDewRj62MVCfdiO7ptJCrVS1C74LSlZhDOgel3k8 CX7H0ZB+jcJ6FjbzyXwcQB+fJrblmDNdPpJYlA3Q= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Johan Hovold Subject: [PATCH 5.15 079/411] USB: serial: omninet: fix memory corruption with small endpoint Date: Tue, 16 Jun 2026 20:25:17 +0530 Message-ID: <20260616145104.471014110@linuxfoundation.org> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260616145100.376842714@linuxfoundation.org> References: <20260616145100.376842714@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 5.15-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;