I'll answer here, despite this not being absolutely a kernel issue...
Well, it's not a big deal, since that stored entropy is not counted in the
entropy count, it's only added entropy, stirred in to the pool. It does
not replace the current state of the pool. So it being visible isn't a
serious problem. That's probably why Ted didn't make it mode 600 when he
wrote the script.
However, future initscripts packages we release (except for possible
security updates to 4.2, which are on a different branch) will set
the saved entropy pool state to mode 600. That way no one else will
worry about it. :-)
michaelkjohnson
"Magazines all too frequently lead to books and should be regarded by the
prudent as the heavy petting of literature." -- Fran Lebowitz