[Libusb-win32-devel] Memory corruption in libusb

[Dan E. <Dan...@ne...>]

Ok, the culprit is finally tracked down, it was nothing to do with
lifetimes of struct usb_devices, but in usb_os_determine_children which
was only fairly recently added.

When the number of children is counted, the number is reset from the
previous occasion, and eventually wraps resulting in a malloc of 0, but
still an attempt to write something in the location allocated which
causes heap corruption.

This was not causing a problem until the memory leak of virtual hubs was
fixed because the new virtual hubs were always zeroed.

Dan