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linux/net/nfc
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Krzysztof Kozlowski fc27ab4890 NFC: nci: uart: Set tty->disc_data only in success path 
Setting tty->disc_data before opening the NCI device means we need to
clean it up on error paths.  This also opens some short window if device
starts sending data, even before NCIUARTSETDRIVER IOCTL succeeded
(broken hardware?).  Close the window by exposing tty->disc_data only on
the success path, when opening of the NCI device and try_module_get()
succeeds.

The code differs in error path in one aspect: tty->disc_data won't be
ever assigned thus NULL-ified.  This however should not be relevant
difference, because of "tty->disc_data=NULL" in nci_uart_tty_open().

Cc: Linus Torvalds <torvalds@linuxfoundation.org>
Fixes: 9961127d4b ("NFC: nci: add generic uart support")
Cc: <stable@vger.kernel.org>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://patch.msgid.link/20250618073649.25049-2-krzysztof.kozlowski@linaro.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-06-19 08:33:54 -07:00
..
hci treewide, timers: Rename from_timer() to timer_container_of() 2025-06-08 09:07:37 +02:00
nci NFC: nci: uart: Set tty->disc_data only in success path 2025-06-19 08:33:54 -07:00
af_nfc.c nfc: fix error handling of nfc_proto_register() 2021-10-13 17:32:38 -07:00
core.c treewide, timers: Rename from_timer() to timer_container_of() 2025-06-08 09:07:37 +02:00
digital.h
digital_core.c net: fill in MODULE_DESCRIPTION()s for NFC 2024-01-11 16:16:08 -08:00
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
Kconfig net: remove redundant 'depends on NET' 2021-01-27 17:04:12 -08:00
llcp.h net: nfc: Fix use-after-free caused by nfc_llcp_find_local 2023-06-26 10:57:23 +01:00
llcp_commands.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2023-06-27 09:45:22 -07:00
llcp_core.c treewide, timers: Rename from_timer() to timer_container_of() 2025-06-08 09:07:37 +02:00
llcp_sock.c net: change proto and proto_ops accept type 2024-05-13 18:19:09 -06:00
Makefile
netlink.c net: nfc: Propagate ISO14443 type A target ATS to userspace via netlink 2024-11-07 10:21:58 +01:00
nfc.h net: nfc: Fix use-after-free caused by nfc_llcp_find_local 2023-06-26 10:57:23 +01:00
rawsock.c nfc: Add KCOV annotations 2022-11-02 11:58:13 +00:00