diff options
| author | Johan Hovold <johan@kernel.org> | 2017-01-03 16:39:42 +0100 |
|---|---|---|
| committer | Moyster <oysterized@gmail.com> | 2017-06-17 15:48:21 +0200 |
| commit | a72c29ad1a15e596dd6be8312b1186f4ccdbfc43 (patch) | |
| tree | 05f374e2f261f0938552b2f999d8af88d7a54f68 /drivers/usb/serial | |
| parent | b296f1a3cad0317672c243b30c500a42b5f54bd9 (diff) | |
USB: serial: io_edgeport: fix NULL-deref at open
commit 0dd408425eb21ddf26a692b3c8044c9e7d1a7948 upstream.
Fix NULL-pointer dereference when initialising URBs at open should a
non-EPIC device lack a bulk-in or interrupt-in endpoint.
Unable to handle kernel NULL pointer dereference at virtual address 00000028
...
PC is at edge_open+0x24c/0x3e8 [io_edgeport]
Note that the EPIC-device probe path has the required sanity checks so
this makes those checks partially redundant.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Willy Tarreau <w@1wt.eu>
Diffstat (limited to 'drivers/usb/serial')
| -rw-r--r-- | drivers/usb/serial/io_edgeport.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/usb/serial/io_edgeport.c b/drivers/usb/serial/io_edgeport.c index c574d312f..9f24fd776 100644 --- a/drivers/usb/serial/io_edgeport.c +++ b/drivers/usb/serial/io_edgeport.c @@ -2795,6 +2795,11 @@ static int edge_startup(struct usb_serial *serial) EDGE_COMPATIBILITY_MASK1, EDGE_COMPATIBILITY_MASK2 }; + if (serial->num_bulk_in < 1 || serial->num_interrupt_in < 1) { + dev_err(&serial->interface->dev, "missing endpoints\n"); + return -ENODEV; + } + dev = serial->dev; /* create our private serial structure */ |