diff options
| author | Johan Hovold <johan@kernel.org> | 2017-03-13 13:39:01 +0100 |
|---|---|---|
| committer | Moyster <oysterized@gmail.com> | 2017-06-17 15:53:42 +0200 |
| commit | 4f4ff216aff7c77c431606d81d872aedaa813982 (patch) | |
| tree | 9c81d5e20d21087ee8cf8e14165c92a11c2e4ef9 | |
| parent | 606c3ce24355c1cd2eb8c935e16b892d97af8656 (diff) | |
isdn/gigaset: fix NULL-deref at probe
commit 68c32f9c2a36d410aa242e661506e5b2c2764179 upstream.
Make sure to check the number of endpoints to avoid dereferencing a
NULL-pointer should a malicious device lack endpoints.
Fixes: cf7776dc05b8 ("[PATCH] isdn4linux: Siemens Gigaset drivers - direct USB connection")
Cc: Hansjoerg Lipp <hjlipp@web.de>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Willy Tarreau <w@1wt.eu>
| -rw-r--r-- | drivers/isdn/gigaset/bas-gigaset.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/isdn/gigaset/bas-gigaset.c b/drivers/isdn/gigaset/bas-gigaset.c index c44950d3e..6d4d9c1c2 100644 --- a/drivers/isdn/gigaset/bas-gigaset.c +++ b/drivers/isdn/gigaset/bas-gigaset.c @@ -2317,6 +2317,9 @@ static int gigaset_probe(struct usb_interface *interface, return -ENODEV; } + if (hostif->desc.bNumEndpoints < 1) + return -ENODEV; + dev_info(&udev->dev, "%s: Device matched (Vendor: 0x%x, Product: 0x%x)\n", __func__, le16_to_cpu(udev->descriptor.idVendor), |