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commit86ef1dfcb5upstream. commit394a9e0447("crypto: cfb - add missing 'chunksize' property") adds a test vector where the input length is smaller than the IV length (the second test vector). This revealed a NULL pointer dereference in the atmel-aes driver, that is caused by passing an incorrect offset in scatterwalk_map_and_copy() when atmel_aes_complete() is called. Do not save the IV in req->info of ablkcipher_request (or equivalently req->iv of skcipher_request) when req->nbytes < ivsize, because the IV will not be further used. While touching the code, modify the type of ivsize from int to unsigned int, to comply with the return type of crypto_ablkcipher_ivsize(). Fixes:91308019ec("crypto: atmel-aes - properly set IV after {en,de}crypt") Cc: <stable@vger.kernel.org> Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.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.