[GIT PULL] Keys fixes

From: James Morris
Date: Thu Nov 24 2016 - 20:32:24 EST


Please pull these fixes for the keys code.

>From David:

" (1) Fix mpi_powm()'s handling of a number with a zero exponent
[CVE-2016-8650].

(2) Fix double free in X.509 error handling.

Ver #3:

- Integrate my and Andrey's patches for mpi_powm() and use mpi_resize()
instead of RESIZE_IF_NEEDED() - the latter adds a duplicate check into
the execution path of a trivial case we don't normally expect to be
taken.

Ver #2:

- Use RESIZE_IF_NEEDED() to conditionally resize the result rather than
manually doing this. "


The following changes since commit 16ae16c6e5616c084168740990fc508bda6655d4:

Merge tag 'mmc-v4.9-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc (2016-11-24 10:51:18 -0800)

are available in the git repository at:

git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security.git for-linus

Andrey Ryabinin (2):
X.509: Fix double free in x509_cert_parse() [ver #3]
mpi: Fix NULL ptr dereference in mpi_powm() [ver #3]

crypto/asymmetric_keys/x509_cert_parser.c | 1 -
lib/mpi/mpi-pow.c | 7 ++++++-
2 files changed, 6 insertions(+), 2 deletions(-)