A-Team_Digital_Solutions/android_kernel_motorola_sm6375
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android_kernel_motorola_sm6375/net/nfc
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Repository files (latest commit first)
Filename Latest commit message Latest commit date
Ryosuke Yasuoka 03fe259649 nfc: nci: Fix uninit-value in nci_dev_up and nci_ntf_packet 
[ Upstream commit d24b03535e5eb82e025219c2f632b485409c898f ]

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>
2024-04-13 12:51:33 +02:00
..
hci nfc: constify several pointers to u8, char and sk_buff 2023-07-27 08:37:07 +02:00
nci nfc: nci: Fix uninit-value in nci_dev_up and nci_ntf_packet 2024-04-13 12:51:33 +02:00
af_nfc.c
core.c nfc: constify several pointers to u8, char and sk_buff 2023-07-27 08:37:07 +02:00
digital.h
digital_core.c
digital_dep.c
digital_technology.c NFC: digital: fix possible memory leak in digital_in_send_sdd_req() 2021-10-20 11:40:16 +02:00
Kconfig
llcp.h net: nfc: Fix use-after-free caused by nfc_llcp_find_local 2023-07-27 08:37:11 +02:00
llcp_commands.c net: nfc: Fix use-after-free caused by nfc_llcp_find_local 2023-07-27 08:37:11 +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 18:25:25 +01:00
llcp_sock.c net: nfc: Fix use-after-free caused by nfc_llcp_find_local 2023-07-27 08:37:11 +02:00
Makefile
netlink.c net: nfc: Fix use-after-free caused by nfc_llcp_find_local 2023-07-27 08:37:11 +02:00
nfc.h net: nfc: Fix use-after-free caused by nfc_llcp_find_local 2023-07-27 08:37:11 +02:00
rawsock.c