[GIT PULL] Audit fixes for v5.6 (#1)

[Paul Moore]

Hi Linus,

Two audit patches to fix problems found by syzbot, please merge for
the next v5.6-rcX release.

* Moving audit filter structure fields into a union caused some
problems in the code which populates that filter structure.  We keep
the union (that idea is a good one), but we are fixing the code so
that it doesn't needlessly set fields in the union and mess up the
error handling.

* The audit_receive_msg() function wasn't validating user input as
well as it should in all cases, we add the necessary checks.

Thanks,
-Paul

--
The following changes since commit cb5172d96d16df72db8b55146b0ec00bfd97f079:

 audit: Add __rcu annotation to RCU pointer (2019-12-09 15:19:03 -0500)

are available in the Git repository at:

 git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit.git
   tags/audit-pr-20200226

for you to fetch changes up to 756125289285f6e55a03861bf4b6257aa3d19a93:

 audit: always check the netlink payload length in audit_receive_msg()
   (2020-02-24 16:38:57 -0500)

----------------------------------------------------------------
audit/stable-5.6 PR 20200226

----------------------------------------------------------------
Paul Moore (2):
     audit: fix error handling in audit_data_to_entry()
     audit: always check the netlink payload length in audit_receive_msg()

kernel/audit.c       | 40 +++++++++++++++--------------
kernel/auditfilter.c | 71 +++++++++++++++++++++++++++---------------------
2 files changed, 60 insertions(+), 51 deletions(-)

-- 
paul moore
www.paul-moore.com