tree 52853491eb793cde61446a97c50f36bc9a6c939b
parent d24b6c624b3b5735ab25e7d6b55ee83da1d9a496
author Andrey Konovalov <andreyknvl@google.com> 1564407301 +0300
committer David S. Miller <davem@davemloft.net> 1564415786 -0700

NFC: fix attrs checks in netlink interface

nfc_genl_deactivate_target() relies on the NFC_ATTR_TARGET_INDEX
attribute being present, but doesn't check whether it is actually
provided by the user. Same goes for nfc_genl_fw_download() and
NFC_ATTR_FIRMWARE_NAME.

This patch adds appropriate checks.

Found with syzkaller.

Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>