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(parent: b8003ce) | patch
nfc: Ensure presence of required attributes in the deactivate_target handler
authorYoung Xiao <92siuyang@gmail.com>
Fri, 14 Jun 2019 07:13:02 +0000 (15:13 +0800)
committerDavid S. Miller <davem@davemloft.net>
Fri, 14 Jun 2019 15:48:08 +0000 (08:48 -0700)
commit385097a3675749cbc9e97c085c0e5dfe4269ca51
tree415306dcaa37476b85400ab59c1413c818450238tree | snapshot
parentb8003cef2e639fbf462a05ff739aae524d72ca3ccommit | diff
nfc: Ensure presence of required attributes in the deactivate_target handler

Check that the NFC_ATTR_TARGET_INDEX attributes (in addition to
NFC_ATTR_DEVICE_INDEX) are provided by the netlink client prior to
accessing them. This prevents potential unhandled NULL pointer dereference
exceptions which can be triggered by malicious user-mode programs,
if they omit one or both of these attributes.

Signed-off-by: Young Xiao <92siuyang@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/nfc/netlink.c diff | blob | blame | history
Linux 6.x block layer and io_uring tree(s)