linux-kernel - [GIT PULL] random fixes for 4.18-rc7

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Date:   Sat, 28 Jul 2018 20:30:46 -0400
From:   "Theodore Y. Ts'o" <tytso@....edu>
To:     torvalds@...ux-foundation.org
Cc:     linux-kernel@...r.kernel.org
Subject: [GIT PULL] random fixes for 4.18-rc7

The following changes since commit 1e4b044d22517cae7047c99038abb444423243ca:

  Linux 4.18-rc4 (2018-07-08 16:34:02 -0700)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random.git tags/random_for_linus_stable

for you to fetch changes up to 81e69df38e2911b642ec121dec319fad2a4782f3:

  random: mix rdrand with entropy sent in from userspace (2018-07-17 21:32:36 -0400)

----------------------------------------------------------------
In reaction to the fixes to address CVE-2018-1108, some Linux
distributions that have certain systemd versions in some cases
combined with patches to libcrypt for FIPS/FEDRAMP compliance, have
led to boot-time stalls for some hardware.  The reaction by some
distros and Linux sysadmins has been to install packages that try to
do complicated things with the CPU and hope that leads to randomness.
To mitigate this, if RDRAND is available, mix it into entropy provided
by userspace.  It won't hurt. and it will probably help.

----------------------------------------------------------------
Theodore Ts'o (1):
      random: mix rdrand with entropy sent in from userspace

 drivers/char/random.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)