[PATCH] usb: drivers/usb/core/devio.c dereferences a userspace pointer
See http://bugzilla.kernel.org/show_bug.cgi?id=6617.
This function dereference a __user pointer.
Signed-off-by: Philippe Retornaz <couriousous@mandriva.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c
index df3fb57..2eda52f 100644
--- a/drivers/usb/core/devio.c
+++ b/drivers/usb/core/devio.c
@@ -1078,7 +1078,9 @@
if (copy_from_user(&uurb, arg, sizeof(uurb)))
return -EFAULT;
- return proc_do_submiturb(ps, &uurb, (((struct usbdevfs_urb __user *)arg)->iso_frame_desc), arg);
+ return proc_do_submiturb(ps, &uurb,
+ (struct usbdevfs_iso_packet_desc __user *)uurb.iso_frame_desc,
+ arg);
}
static int proc_unlinkurb(struct dev_state *ps, void __user *arg)
@@ -1203,7 +1205,9 @@
if (get_urb32(&uurb,(struct usbdevfs_urb32 *)arg))
return -EFAULT;
- return proc_do_submiturb(ps, &uurb, ((struct usbdevfs_urb32 __user *)arg)->iso_frame_desc, arg);
+ return proc_do_submiturb(ps, &uurb,
+ (struct usbdevfs_iso_packet_desc __user *)uurb.iso_frame_desc,
+ arg);
}
static int processcompl_compat(struct async *as, void __user * __user *arg)
