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linux-stable/net/nfc
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Ryosuke Yasuoka ac68d9fa09 nfc: nci: Fix uninit-value in nci_dev_up and nci_ntf_packet 
[ Upstream commit d24b03535e ]

syzbot reported the following uninit-value access issue [1][2]:

nci_rx_work() parses and processes received packet. When the payload
length is zero, each message type handler reads uninitialized payload
and KMSAN detects this issue. The receipt of a packet with a zero-size
payload is considered unexpected, and therefore, such packets should be
silently discarded.

This patch resolved this issue by checking payload size before calling
each message type handler codes.

Fixes: 6a2968aaf5 ("NFC: basic NCI protocol implementation")
Reported-and-tested-by: syzbot+7ea9413ea6749baf5574@syzkaller.appspotmail.com
Reported-and-tested-by: syzbot+29b5ca705d2e0f4a44d2@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=7ea9413ea6749baf5574 [1]
Closes: https://syzkaller.appspot.com/bug?extid=29b5ca705d2e0f4a44d2 [2]
Signed-off-by: Ryosuke Yasuoka <ryasuoka@redhat.com>
Reviewed-by: Jeremy Cline <jeremy@jcline.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
 		2024-04-10 16:19:35 +02:00
..
hci nfc: constify local pointer variables 2021-07-30 17:22:52 +02:00
nci nfc: nci: Fix uninit-value in nci_dev_up and nci_ntf_packet 2024-04-10 16:19:35 +02:00
Kconfig net: remove redundant 'depends on NET' 2021-01-27 17:04:12 -08:00
Makefile
…
af_nfc.c nfc: fix error handling of nfc_proto_register() 2021-10-13 17:32:38 -07:00
core.c NFC: NULL out the dev->rfkill to prevent UAF 2022-06-09 10:22:46 +02:00
digital.h
…
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
llcp.h net: nfc: Fix use-after-free caused by nfc_llcp_find_local 2023-07-23 13:46:56 +02:00
llcp_commands.c net: nfc: Fix use-after-free caused by nfc_llcp_find_local 2023-07-23 13:46:56 +02:00
llcp_core.c nfc: llcp_core: Hold a ref to llcp_local->dev when holding a ref to llcp_local 2024-01-15 18:51:09 +01:00
llcp_sock.c net: nfc: Fix use-after-free caused by nfc_llcp_find_local 2023-07-23 13:46:56 +02:00
netlink.c net: nfc: Fix use-after-free caused by nfc_llcp_find_local 2023-07-23 13:46:56 +02:00
nfc.h net: nfc: Fix use-after-free caused by nfc_llcp_find_local 2023-07-23 13:46:56 +02:00
rawsock.c net: in_irq() cleanup 2021-08-13 14:09:19 -07:00