From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 6A8B7DDB1; Thu, 13 Jun 2024 11:39:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718278772; cv=none; b=rptohMFyO1mGLpgCILKcIEh1wS+y5vv2JZM3vQEGQgkYX/SPv4ODuSjGZEU9BZn5WpRLTdKmxJzsjGOFkd2A7ebGHnxLI+4jvU/GwwgQcS98Hz4PlxJIMT4PFodw2f6P/L3kA6mq9K/U9+jZBcs+UbFuKyQHTVassQf1uSHb+DI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718278772; c=relaxed/simple; bh=wKpXJ+OBkDzUxO5EzMFfsxtTQMkrnl24t286MRtbRZo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=kn4rB1z3q+4xS8nqI/HB2bfoLoBfk/2YQrTiM7wx9msP15dbVISe7YvjJ5UkQxViEfFxDxiWxe4iQIT5lZKg6yrWHRY+9WrVpL8iQxpwJR8IOXo5+kxrfX0XMzHl0Hgk8u2bXKFwXCn9g4MwRNzFdDVVg65o2lJg19ETu64Kf6A= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=2YaV8twc; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="2YaV8twc" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E4A6EC2BBFC; Thu, 13 Jun 2024 11:39:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1718278772; bh=wKpXJ+OBkDzUxO5EzMFfsxtTQMkrnl24t286MRtbRZo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=2YaV8twcF/lNASnEqDuMvE40dzl04P8CS0gKkO0YFLlhJul9VKULQXoRBZfhIHNH1 OYiDf2ipiHC+tZ4JTpnhQ9W86tuOuCDJ3U9SHobZdy1ZLuYGuWciWZ6KQMzY+IiiOn 068k/ajAWjsW2jcHlqrdcadZmZBTZDmVoz+mSt3c= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Nikita Zhandarovich , Christian Lamparter , Kalle Valo , Sasha Levin , syzbot+0ae4804973be759fa420@syzkaller.appspotmail.com Subject: [PATCH 4.19 047/213] wifi: carl9170: add a proper sanity check for endpoints Date: Thu, 13 Jun 2024 13:31:35 +0200 Message-ID: <20240613113229.822144073@linuxfoundation.org> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20240613113227.969123070@linuxfoundation.org> References: <20240613113227.969123070@linuxfoundation.org> User-Agent: quilt/0.67 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 4.19-stable review patch. If anyone has any objections, please let me know. ------------------ From: Nikita Zhandarovich [ Upstream commit b6dd09b3dac89b45d1ea3e3bd035a3859c0369a0 ] Syzkaller reports [1] hitting a warning which is caused by presence of a wrong endpoint type at the URB sumbitting stage. While there was a check for a specific 4th endpoint, since it can switch types between bulk and interrupt, other endpoints are trusted implicitly. Similar warning is triggered in a couple of other syzbot issues [2]. Fix the issue by doing a comprehensive check of all endpoints taking into account difference between high- and full-speed configuration. [1] Syzkaller report: ... WARNING: CPU: 0 PID: 4721 at drivers/usb/core/urb.c:504 usb_submit_urb+0xed6/0x1880 drivers/usb/core/urb.c:504 ... Call Trace: carl9170_usb_send_rx_irq_urb+0x273/0x340 drivers/net/wireless/ath/carl9170/usb.c:504 carl9170_usb_init_device drivers/net/wireless/ath/carl9170/usb.c:939 [inline] carl9170_usb_firmware_finish drivers/net/wireless/ath/carl9170/usb.c:999 [inline] carl9170_usb_firmware_step2+0x175/0x240 drivers/net/wireless/ath/carl9170/usb.c:1028 request_firmware_work_func+0x130/0x240 drivers/base/firmware_loader/main.c:1107 process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289 worker_thread+0x669/0x1090 kernel/workqueue.c:2436 kthread+0x2e8/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 [2] Related syzkaller crashes: Link: https://syzkaller.appspot.com/bug?extid=e394db78ae0b0032cb4d Link: https://syzkaller.appspot.com/bug?extid=9468df99cb63a4a4c4e1 Reported-and-tested-by: syzbot+0ae4804973be759fa420@syzkaller.appspotmail.com Fixes: a84fab3cbfdc ("carl9170: 802.11 rx/tx processing and usb backend") Signed-off-by: Nikita Zhandarovich Acked-By: Christian Lamparter Signed-off-by: Kalle Valo Link: https://msgid.link/20240422183355.3785-1-n.zhandarovich@fintech.ru Signed-off-by: Sasha Levin --- drivers/net/wireless/ath/carl9170/usb.c | 32 +++++++++++++++++++++++++ 1 file changed, 32 insertions(+) diff --git a/drivers/net/wireless/ath/carl9170/usb.c b/drivers/net/wireless/ath/carl9170/usb.c index 99f1897a775dc..738f43b17e959 100644 --- a/drivers/net/wireless/ath/carl9170/usb.c +++ b/drivers/net/wireless/ath/carl9170/usb.c @@ -1069,6 +1069,38 @@ static int carl9170_usb_probe(struct usb_interface *intf, ar->usb_ep_cmd_is_bulk = true; } + /* Verify that all expected endpoints are present */ + if (ar->usb_ep_cmd_is_bulk) { + u8 bulk_ep_addr[] = { + AR9170_USB_EP_RX | USB_DIR_IN, + AR9170_USB_EP_TX | USB_DIR_OUT, + AR9170_USB_EP_CMD | USB_DIR_OUT, + 0}; + u8 int_ep_addr[] = { + AR9170_USB_EP_IRQ | USB_DIR_IN, + 0}; + if (!usb_check_bulk_endpoints(intf, bulk_ep_addr) || + !usb_check_int_endpoints(intf, int_ep_addr)) + err = -ENODEV; + } else { + u8 bulk_ep_addr[] = { + AR9170_USB_EP_RX | USB_DIR_IN, + AR9170_USB_EP_TX | USB_DIR_OUT, + 0}; + u8 int_ep_addr[] = { + AR9170_USB_EP_IRQ | USB_DIR_IN, + AR9170_USB_EP_CMD | USB_DIR_OUT, + 0}; + if (!usb_check_bulk_endpoints(intf, bulk_ep_addr) || + !usb_check_int_endpoints(intf, int_ep_addr)) + err = -ENODEV; + } + + if (err) { + carl9170_free(ar); + return err; + } + usb_set_intfdata(intf, ar); SET_IEEE80211_DEV(ar->hw, &intf->dev); -- 2.43.0