Kees Cook 80adbd8c45 fortify: Fix dropped strcpy() compile-time write overflow check ...

[ Upstream commit 072af0c638dc8a5c7db2edc4dddbd6d44bee3bdb ]

The implementation for intra-object overflow in str*-family functions
accidentally dropped compile-time write overflow checking in strcpy(),
leaving it entirely to run-time. Add back the intended check.

Fixes: 6a39e62abb ("lib: string.h: detect intra-object overflow in fortified string functions")
Cc: Daniel Axtens <dja@axtens.net>
Cc: Francis Laniel <laniel_francis@privacyrequired.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2021-11-18 19:16:25 +01:00

9.1 KiB

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