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[ Upstream commita6921dd524] These values come from skb->data so Smatch considers them untrusted. I believe Smatch is correct but I don't have a way to test this. The usb_if->dev[] array has 2 elements but the index is in the 0-15 range without checks. The cfd->len can be up to 255 but the maximum valid size is CANFD_MAX_DLEN (64) so that could lead to memory corruption. Fixes:0a25e1f4f1("can: peak_usb: add support for PEAK new CANFD USB adapters") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Link: https://lore.kernel.org/r/20200813140604.GA456946@mwanda Acked-by: Stephane Grosjean <s.grosjean@peak-system.com> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> 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.
See Documentation/00-INDEX for a list of what is contained in each file.
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.