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strcpy() performs no bounds checking on the destination buffer. This could result in linear overflows beyond the end of the buffer, leading to all kinds of misbehaviors. So, remove all the uses and add devm_kstrdup() or devm_kasprintf() instead. Also, modify the "for" loop conditions to clarify the access to the st->orientation.rotation buffer. This patch is an effort to clean up the proliferation of str*() functions in the kernel and a previous step in the path to remove the strcpy function from the kernel entirely [1]. [1] https://github.com/KSPP/linux/issues/88 Signed-off-by: Len Baker <len.baker@gmx.com> Link: https://lore.kernel.org/r/20210815174204.126593-1-len.baker@gmx.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.