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| author | Kees Cook <keescook@chromium.org> | 2022-09-23 21:08:35 -0700 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2022-09-27 07:45:18 -0700 |
| commit | de4feb4e3d61026f81b15ada6f64deaf40125ffc (patch) | |
| tree | 592cc0d923b1c86654465d4b0bcf8ee0e6ca92fe /kernel/module | |
| parent | 454b20e19322e6a9375cbaad68fff3c93bd27716 (diff) | |
| download | linux-de4feb4e3d61026f81b15ada6f64deaf40125ffc.tar.gz linux-de4feb4e3d61026f81b15ada6f64deaf40125ffc.tar.bz2 linux-de4feb4e3d61026f81b15ada6f64deaf40125ffc.zip | |
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>
Diffstat (limited to 'kernel/module')
0 files changed, 0 insertions, 0 deletions