As part of the fix for CVE-2018-1108 (kernel drivers before version 4.17-rc1
are vulnerable to a weakness in the Linux kernel's implementation of random
seed data. Programs, early in the boot sequence, could use the data
allocated for the seed before it was sufficiently generated), the kernel
random number generator initialization routine was changed. See the
project-zero writeup for more details:
https://bugs.chromium.org/p/project-zero/issues/detail?id=1559
These changes have now also been backported to 4.14.x (since 4.14.39) and
4.16.x (since 4.16.7).
This change unfortunately causes users of libuuid from util-linux to block
for a very long time waiting for sufficient entropy. An example of this is
mke2fs, which uses libuuid to generate the filesystem UUID.
Fix this by backporting two post-2.31 fixes from upstream.
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Tested-by: Carlos Santos <casantos@datacom.com.br>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
c4d86707cd