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[ Upstream commit 102fb77c2deb0df3683ef8ff7a6f4cf91dc456e2 ] At several positions in dvb_frontend.c, memdup_user() is utilized to copy userspace arrays. This is done without overflow checks. Use the new wrapper memdup_array_user() to copy the arrays more safely. Link: https://lore.kernel.org/linux-media/20231102191633.52592-2-pstanner@redhat.com Suggested-by: Dave Airlie <airlied@redhat.com> Signed-off-by: Philipp Stanner <pstanner@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
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.