From: Rustam Kovhaev <rkovhaev@gmail.com> To: gregkh@linuxfoundation.org Cc: devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org, Rustam Kovhaev <rkovhaev@gmail.com> Subject: [PATCH] staging: wlan-ng: properly check endpoint types Date: Wed, 22 Jul 2020 09:10:52 -0700 [thread overview] Message-ID: <20200722161052.999754-1-rkovhaev@gmail.com> (raw) As syzkaller detected, wlan-ng driver does not do sanity check of endpoints in prism2sta_probe_usb(), add check for xfer direction and type Reported-and-tested-by: syzbot+c2a1fa67c02faa0de723@syzkaller.appspotmail.com Link: https://syzkaller.appspot.com/bug?extid=c2a1fa67c02faa0de723 Signed-off-by: Rustam Kovhaev <rkovhaev@gmail.com> --- drivers/staging/wlan-ng/prism2usb.c | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-) diff --git a/drivers/staging/wlan-ng/prism2usb.c b/drivers/staging/wlan-ng/prism2usb.c index 4689b2170e4f..456603fd26c0 100644 --- a/drivers/staging/wlan-ng/prism2usb.c +++ b/drivers/staging/wlan-ng/prism2usb.c @@ -61,11 +61,25 @@ static int prism2sta_probe_usb(struct usb_interface *interface, const struct usb_device_id *id) { struct usb_device *dev; - + const struct usb_endpoint_descriptor *epd; + const struct usb_host_interface *iface_desc = interface->cur_altsetting; struct wlandevice *wlandev = NULL; struct hfa384x *hw = NULL; int result = 0; + if (iface_desc->desc.bNumEndpoints != 2) { + result = -ENODEV; + goto failed; + } + + result = -EINVAL; + epd = &iface_desc->endpoint[1].desc; + if (!usb_endpoint_is_bulk_in(epd)) + goto failed; + epd = &iface_desc->endpoint[2].desc; + if (!usb_endpoint_is_bulk_out(epd)) + goto failed; + dev = interface_to_usbdev(interface); wlandev = create_wlan(); if (!wlandev) { -- 2.27.0
WARNING: multiple messages have this Message-ID (diff)
From: Rustam Kovhaev <rkovhaev@gmail.com> To: gregkh@linuxfoundation.org Cc: devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org, Rustam Kovhaev <rkovhaev@gmail.com> Subject: [PATCH] staging: wlan-ng: properly check endpoint types Date: Wed, 22 Jul 2020 09:10:52 -0700 [thread overview] Message-ID: <20200722161052.999754-1-rkovhaev@gmail.com> (raw) As syzkaller detected, wlan-ng driver does not do sanity check of endpoints in prism2sta_probe_usb(), add check for xfer direction and type Reported-and-tested-by: syzbot+c2a1fa67c02faa0de723@syzkaller.appspotmail.com Link: https://syzkaller.appspot.com/bug?extid=c2a1fa67c02faa0de723 Signed-off-by: Rustam Kovhaev <rkovhaev@gmail.com> --- drivers/staging/wlan-ng/prism2usb.c | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-) diff --git a/drivers/staging/wlan-ng/prism2usb.c b/drivers/staging/wlan-ng/prism2usb.c index 4689b2170e4f..456603fd26c0 100644 --- a/drivers/staging/wlan-ng/prism2usb.c +++ b/drivers/staging/wlan-ng/prism2usb.c @@ -61,11 +61,25 @@ static int prism2sta_probe_usb(struct usb_interface *interface, const struct usb_device_id *id) { struct usb_device *dev; - + const struct usb_endpoint_descriptor *epd; + const struct usb_host_interface *iface_desc = interface->cur_altsetting; struct wlandevice *wlandev = NULL; struct hfa384x *hw = NULL; int result = 0; + if (iface_desc->desc.bNumEndpoints != 2) { + result = -ENODEV; + goto failed; + } + + result = -EINVAL; + epd = &iface_desc->endpoint[1].desc; + if (!usb_endpoint_is_bulk_in(epd)) + goto failed; + epd = &iface_desc->endpoint[2].desc; + if (!usb_endpoint_is_bulk_out(epd)) + goto failed; + dev = interface_to_usbdev(interface); wlandev = create_wlan(); if (!wlandev) { -- 2.27.0 _______________________________________________ devel mailing list devel@linuxdriverproject.org http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
next reply other threads:[~2020-07-22 16:11 UTC|newest] Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-07-22 16:10 Rustam Kovhaev [this message] 2020-07-22 16:10 ` [PATCH] staging: wlan-ng: properly check endpoint types Rustam Kovhaev -- strict thread matches above, loose matches on Subject: below -- 2020-07-18 15:58 Rustam Kovhaev 2020-07-18 15:58 ` Rustam Kovhaev 2020-07-19 9:23 ` Greg KH 2020-07-19 9:23 ` Greg KH 2020-07-19 18:12 ` Rustam Kovhaev 2020-07-19 18:12 ` Rustam Kovhaev
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