Lin Ma 0ad6bded17 nfc/nci: fix race with opening and closing ...

Previously we leverage NCI_UNREG and the lock inside nci_close_device to
prevent the race condition between opening a device and closing a
device. However, it still has problem because a failed opening command
will erase the NCI_UNREG flag and allow another opening command to
bypass the status checking.

This fix corrects that by making sure the NCI_UNREG is held.

Reported-by: syzbot+43475bf3cfbd6e41f5b7@syzkaller.appspotmail.com
Fixes: 48b71a9e66c2 ("NFC: add NCI_UNREG flag to eliminate the race")
Signed-off-by: Lin Ma <linma@zju.edu.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>

2022-11-18 12:37:11 +00:00

..

hci

NFC: hci: Split memcpy() of struct hcp_message flexible array

2022-09-27 07:45:18 -07:00

nci

nfc/nci: fix race with opening and closing

2022-11-18 12:37:11 +00:00

af_nfc.c

nfc: fix error handling of nfc_proto_register()

2021-10-13 17:32:38 -07:00

core.c

net: nfc: Directly use ida_alloc()/free()

2022-05-28 15:28:47 +01:00

digital_core.c

NFC: digital: fix possible memory leak in digital_tg_listen_mdaa()

2021-10-13 17:44:29 -07:00

digital_dep.c

net:nfc:digital: Fix a double free in digital_tg_recv_dep_req

2021-04-27 15:36:10 -07:00

digital_technology.c

NFC: digital: fix possible memory leak in digital_in_send_sdd_req()

2021-10-13 17:44:29 -07:00

digital.h

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 288

2019-06-05 17:36:37 +02:00

Kconfig

net: remove redundant 'depends on NET'

2021-01-27 17:04:12 -08:00

llcp_commands.c

nfc: drop unneeded debug prints

2021-10-11 17:00:51 -07:00

llcp_core.c

nfc: llcp: Revert "NFC: Keep socket alive until the DISC PDU is actually sent"

2022-03-03 10:43:37 +00:00

llcp_sock.c

net: remove noblock parameter from skb_recv_datagram()

2022-04-06 13:45:26 +01:00

llcp.h

nfc: llcp: Revert "NFC: Keep socket alive until the DISC PDU is actually sent"

2022-03-03 10:43:37 +00:00

Makefile

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

netlink.c

genetlink: start to validate reserved header bytes

2022-08-29 12:47:15 +01:00

nfc.h

nfc: constify several pointers to u8, char and sk_buff

2021-07-30 17:22:52 +02:00

rawsock.c

net: remove noblock parameter from skb_recv_datagram()

2022-04-06 13:45:26 +01:00