linux-kernel - Re: [PATCH 2/2] kconfig: Deny command substitution in string values

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Message-ID: <boris.20210927162833@codesynthesis.com>
Date:   Mon, 27 Sep 2021 16:34:22 +0200
From:   Boris Kolpackov <boris@...esynthesis.com>
To:     Richard Weinberger <richard@....at>
Cc:     masahiroy <masahiroy@...nel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        linux-kbuild <linux-kbuild@...r.kernel.org>
Subject: Re: [PATCH 2/2] kconfig: Deny command substitution in string values

Richard Weinberger <richard@....at> writes:

> Yes. auto.conf is .config post processed.
> This is exactly where my mitigation takes place.

No, sym_escape_string_value() is called by conf_write_symbol()
which in turn is called from conf_write() and conf_write_defconfig()
(used to write .config files) besides conf_write_autoconf() (used to
write auto.conf).