Skip to content
Commit 8ef35c86 authored by Theodore Ts'o's avatar Theodore Ts'o
Browse files

random: set up the NUMA crng instances after the CRNG is fully initialized



Until the primary_crng is fully initialized, don't initialize the NUMA
crng nodes.  Otherwise users of /dev/urandom on NUMA systems before
the CRNG is fully initialized can get very bad quality randomness.  Of
course everyone should move to getrandom(2) where this won't be an
issue, but there's a lot of legacy code out there.  This related to
CVE-2018-1108.

Reported-by: default avatarJann Horn <jannh@google.com>
Fixes: 1e7f583a ("random: make /dev/urandom scalable for silly...")
Cc: stable@kernel.org # 4.8+
Signed-off-by: default avatarTheodore Ts'o <tytso@mit.edu>
parent dc12baac
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment