From: Johan Hovold <johan@kernel.org>
To: Oliver Neukum <oneukum@suse.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
linux-usb@vger.kernel.org,
Daniel Caujolle-Bert <f1rmb.daniel@gmail.com>,
Johan Hovold <johan@kernel.org>
Subject: [PATCH v2 1/4] Revert "cdc-acm: hardening against malicious devices"
Date: Mon, 21 Sep 2020 15:59:48 +0200 [thread overview]
Message-ID: <20200921135951.24045-2-johan@kernel.org> (raw)
In-Reply-To: <20200921135951.24045-1-johan@kernel.org>
This reverts commit 2ad9d544f2497a7bf239c34bd2b86fd19683dbb5.
Drop bogus sanity check; an interface in the active configuration will
always have a current altsetting assigned by USB core.
Signed-off-by: Johan Hovold <johan@kernel.org>
---
drivers/usb/class/cdc-acm.c | 5 -----
1 file changed, 5 deletions(-)
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
index 7f6f3ab5b8a6..e28ac640ff9c 100644
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -1196,9 +1196,6 @@ static int acm_probe(struct usb_interface *intf,
return -EINVAL;
}
- if (!intf->cur_altsetting)
- return -EINVAL;
-
if (!buflen) {
if (intf->cur_altsetting->endpoint &&
intf->cur_altsetting->endpoint->extralen &&
@@ -1252,8 +1249,6 @@ static int acm_probe(struct usb_interface *intf,
dev_dbg(&intf->dev, "no interfaces\n");
return -ENODEV;
}
- if (!data_interface->cur_altsetting || !control_interface->cur_altsetting)
- return -ENODEV;
if (data_intf_num != call_intf_num)
dev_dbg(&intf->dev, "Separate call control interface. That is not fully supported.\n");
--
2.26.2
next prev parent reply other threads:[~2020-09-21 14:00 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-21 13:59 [PATCH v2 0/4] USB: cdc-acm: handle broken union descriptors Johan Hovold
2020-09-21 13:59 ` Johan Hovold [this message]
2020-09-21 13:59 ` [PATCH v2 2/4] " Johan Hovold
2020-09-22 9:53 ` <Daniel Caujolle-Bert>
2020-09-21 13:59 ` [PATCH v2 3/4] USB: cdc-acm: use common data-class define Johan Hovold
2020-09-21 13:59 ` [PATCH v2 4/4] USB: cdc-acm: clean up no-union-descriptor handling Johan Hovold
2020-09-21 14:16 ` Oliver Neukum
2020-09-21 14:28 ` Johan Hovold
2020-09-21 15:04 ` Oliver Neukum
2020-09-21 15:16 ` Johan Hovold
2020-09-21 17:17 ` Oliver Neukum
2020-09-22 7:05 ` Johan Hovold
2020-09-22 10:40 ` Oliver Neukum
2020-09-22 10:54 ` Johan Hovold
2020-09-22 11:41 ` Oliver Neukum
2020-09-22 11:47 ` Johan Hovold
2020-09-21 14:21 ` [PATCH v2 0/4] USB: cdc-acm: handle broken union descriptors <Daniel Caujolle-Bert>
2020-09-21 16:19 ` <Daniel Caujolle-Bert>
2020-09-22 7:08 ` Johan Hovold
2020-09-22 9:56 ` <Daniel Caujolle-Bert>
2020-09-22 10:07 ` Johan Hovold
2020-09-22 12:10 ` Oliver Neukum
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