Patch "wifi: ath9k: verify the expected usb_endpoints are present" has been added to the 5.10-stable tree

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



This is a note to let you know that I've just added the patch titled

    wifi: ath9k: verify the expected usb_endpoints are present

to the 5.10-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     wifi-ath9k-verify-the-expected-usb_endpoints-are-pre.patch
and it can be found in the queue-5.10 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 28b9bdba0bd5e4dcb3e915deb8fa66ed87c227da
Author: Fedor Pchelkin <pchelkin@xxxxxxxxx>
Date:   Sun Oct 9 00:15:32 2022 +0300

    wifi: ath9k: verify the expected usb_endpoints are present
    
    [ Upstream commit 16ef02bad239f11f322df8425d302be62f0443ce ]
    
    The bug arises when a USB device claims to be an ATH9K but doesn't
    have the expected endpoints. (In this case there was an interrupt
    endpoint where the driver expected a bulk endpoint.) The kernel
    needs to be able to handle such devices without getting an internal error.
    
    usb 1-1: BOGUS urb xfer, pipe 3 != type 1
    WARNING: CPU: 3 PID: 500 at drivers/usb/core/urb.c:493 usb_submit_urb+0xce2/0x1430 drivers/usb/core/urb.c:493
    Modules linked in:
    CPU: 3 PID: 500 Comm: kworker/3:2 Not tainted 5.10.135-syzkaller #0
    Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
    Workqueue: events request_firmware_work_func
    RIP: 0010:usb_submit_urb+0xce2/0x1430 drivers/usb/core/urb.c:493
    Call Trace:
     ath9k_hif_usb_alloc_rx_urbs drivers/net/wireless/ath/ath9k/hif_usb.c:908 [inline]
     ath9k_hif_usb_alloc_urbs+0x75e/0x1010 drivers/net/wireless/ath/ath9k/hif_usb.c:1019
     ath9k_hif_usb_dev_init drivers/net/wireless/ath/ath9k/hif_usb.c:1109 [inline]
     ath9k_hif_usb_firmware_cb+0x142/0x530 drivers/net/wireless/ath/ath9k/hif_usb.c:1242
     request_firmware_work_func+0x12e/0x240 drivers/base/firmware_loader/main.c:1097
     process_one_work+0x9af/0x1600 kernel/workqueue.c:2279
     worker_thread+0x61d/0x12f0 kernel/workqueue.c:2425
     kthread+0x3b4/0x4a0 kernel/kthread.c:313
     ret_from_fork+0x22/0x30 arch/x86/entry/entry_64.S:299
    
    Found by Linux Verification Center (linuxtesting.org) with Syzkaller.
    
    Suggested-by: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
    Signed-off-by: Fedor Pchelkin <pchelkin@xxxxxxxxx>
    Signed-off-by: Alexey Khoroshilov <khoroshilov@xxxxxxxxx>
    Acked-by: Toke Høiland-Jørgensen <toke@xxxxxxx>
    Signed-off-by: Kalle Valo <quic_kvalo@xxxxxxxxxxx>
    Link: https://lore.kernel.org/r/20221008211532.74583-1-pchelkin@xxxxxxxxx
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/net/wireless/ath/ath9k/hif_usb.c b/drivers/net/wireless/ath/ath9k/hif_usb.c
index e5d5b0761881..f938ac1a4abd 100644
--- a/drivers/net/wireless/ath/ath9k/hif_usb.c
+++ b/drivers/net/wireless/ath/ath9k/hif_usb.c
@@ -1328,10 +1328,24 @@ static int send_eject_command(struct usb_interface *interface)
 static int ath9k_hif_usb_probe(struct usb_interface *interface,
 			       const struct usb_device_id *id)
 {
+	struct usb_endpoint_descriptor *bulk_in, *bulk_out, *int_in, *int_out;
 	struct usb_device *udev = interface_to_usbdev(interface);
+	struct usb_host_interface *alt;
 	struct hif_device_usb *hif_dev;
 	int ret = 0;
 
+	/* Verify the expected endpoints are present */
+	alt = interface->cur_altsetting;
+	if (usb_find_common_endpoints(alt, &bulk_in, &bulk_out, &int_in, &int_out) < 0 ||
+	    usb_endpoint_num(bulk_in) != USB_WLAN_RX_PIPE ||
+	    usb_endpoint_num(bulk_out) != USB_WLAN_TX_PIPE ||
+	    usb_endpoint_num(int_in) != USB_REG_IN_PIPE ||
+	    usb_endpoint_num(int_out) != USB_REG_OUT_PIPE) {
+		dev_err(&udev->dev,
+			"ath9k_htc: Device endpoint numbers are not the expected ones\n");
+		return -ENODEV;
+	}
+
 	if (id->driver_info == STORAGE_DEVICE)
 		return send_eject_command(interface);
 



[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Index of Archives]     [Linux USB Devel]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux