Re: [PATCH][hid] Fix a NULL pointer dereference when we fail to allocate memory

[Jiri Kosina <jikos@jikos.cz>]

On Sun, 22 Jul 2007, Jesper Juhl wrote:

> If, in usb_hid_configure(), we fail to allocate storage for 'usbhid', 
>  "if (!(usbhid = kzalloc(sizeof(struct usbhid_device), GFP_KERNEL)))", 
> then we'll jump to the 'fail:' label where we have this code:
>         usb_free_urb(usbhid->urbin);
>         usb_free_urb(usbhid->urbout);
>         usb_free_urb(usbhid->urbctrl);
> Since we got here because we couldn't allocate storage for 'usbhid', 
> what we have here is a NULL pointer dereference - ouch...

Hi Jesper,

thanks a lot for noticing this, I have queued your patch in HID tree.

(and sorry for late reply, I was offline on vacation for some time).

-- 
Jiri Kosina
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