1
linux/net/nfc/hci
Kees Cook de4feb4e3d NFC: hci: Split memcpy() of struct hcp_message flexible array
To work around a misbehavior of the compiler's ability to see into
composite flexible array structs (as detailed in the coming memcpy()
hardening series[1]), split the memcpy() of the header and the payload
so no false positive run-time overflow warning will be generated. This
split already existed for the "firstfrag" case, so just generalize the
logic further.

[1] https://lore.kernel.org/linux-hardening/20220901065914.1417829-2-keescook@chromium.org/

Cc: Eric Dumazet <edumazet@google.com>
Cc: Paolo Abeni <pabeni@redhat.com>
Reported-by: "Gustavo A. R. Silva" <gustavoars@kernel.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20220924040835.3364912-1-keescook@chromium.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-09-27 07:45:18 -07:00
..
command.c nfc: drop unneeded debug prints 2021-10-11 17:00:51 -07:00
core.c nfc: constify local pointer variables 2021-07-30 17:22:52 +02:00
hci.h
hcp.c NFC: hci: Split memcpy() of struct hcp_message flexible array 2022-09-27 07:45:18 -07:00
Kconfig
llc_nop.c nfc: constify nfc_llc_ops 2021-07-25 09:21:21 +01:00
llc_shdlc.c nfc: drop unneeded debug prints 2021-10-11 17:00:51 -07:00
llc.c nfc: hci: annotate nfc_llc_init() as __init 2021-07-30 17:22:51 +02:00
llc.h nfc: constify nfc_llc_ops 2021-07-25 09:21:21 +01:00
Makefile