Duoming Zhou 50403ee6da nfc: pn533: Fix use-after-free bugs caused by pn532_cmd_timeout ... [ Upstream commit f1e941dbf8 ] When the pn532 uart device is detaching, the pn532_uart_remove() is called. But there are no functions in pn532_uart_remove() that could delete the cmd_timeout timer, which will cause use-after-free bugs. The process is shown below: (thread 1) | (thread 2) | pn532_uart_send_frame pn532_uart_remove | mod_timer(&pn532->cmd_timeout,...) ... | (wait a time) kfree(pn532) //FREE | pn532_cmd_timeout | pn532_uart_send_frame | pn532->... //USE This patch adds del_timer_sync() in pn532_uart_remove() in order to prevent the use-after-free bugs. What's more, the pn53x_unregister_nfc() is well synchronized, it sets nfc_dev->shutting_down to true and there are no syscalls could restart the cmd_timeout timer. Fixes: c656aa4c27 ("nfc: pn533: add UART phy driver") Signed-off-by: Duoming Zhou <duoming@zju.edu.cn> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <sashal@kernel.org>		2022-08-31 17:15:16 +02:00
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fdp
microread
nfcmrvl	nfc: nfcmrvl: Fix irq_of_parse_and_map() return value	2022-07-07 17:52:18 +02:00
nxp-nci	NFC: nxp-nci: don't print header length mismatch on i2c error	2022-07-21 21:20:14 +02:00
pn533	nfc: pn533: Fix use-after-free bugs caused by pn532_cmd_timeout	2022-08-31 17:15:16 +02:00
pn544
s3fwrn5	nfc: s3fwrn5: Release the nfc firmware	2020-12-30 11:53:53 +01:00
st-nci
st21nfca	nfc: st21nfca: fix incorrect sizing calculations in EVT_TRANSACTION	2022-06-14 18:32:46 +02:00
st95hf
Kconfig
Makefile
mei_phy.c
mei_phy.h
nfcsim.c	nfc: nfcsim: fix use after free during module unload	2021-08-04 12:46:41 +02:00
port100.c	NFC: port100: fix use-after-free in port100_send_complete	2022-03-16 14:15:59 +01:00
trf7970a.c	nfc: remove unneeded break	2020-10-20 10:36:41 -07:00