tree 554cee7029e33f05621276f43e792ba6097b7d35
parent 5e50afb2273c6fc8b2f9faa745d738662ce19e6f
author Johan Hovold <johan@kernel.org> 1489409273 +0100
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1490859684 +0200

uwb: i1480-dfu: fix NULL-deref at probe

commit 4ce362711d78a4999011add3115b8f4b0bc25e8c upstream.

Make sure to check the number of endpoints to avoid dereferencing a
NULL-pointer should a malicious device lack endpoints.

Note that the dereference happens in the cmd and wait_init_done
callbacks which are called during probe.

Fixes: 1ba47da52712 ("uwb: add the i1480 DFU driver")
Cc: Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
Cc: David Vrabel <david.vrabel@csr.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>