tree 56a2a81c71936937f7ca46261c6cdd5e7ceebf38
parent d92fa5be781c08695c9cb47124a5ac4746964e6d
author Dan Carpenter <dan.carpenter@oracle.com> 1383153171 +0300
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1385751030 -0800

libertas: potential oops in debugfs

commit a497e47d4aec37aaf8f13509f3ef3d1f6a717d88 upstream.

If we do a zero size allocation then it will oops.  Also we can't be
sure the user passes us a NUL terminated string so I've added a
terminator.

This code can only be triggered by root.

Reported-by: Nico Golde <nico@ngolde.de>
Reported-by: Fabian Yamaguchi <fabs@goesec.de>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Cc: Kees Cook <keescook@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>