Get just security updates with yum?

[Bill Davidsen]

Is there a way to get just security updates with command line yum? Clearly I can 
make a list of packages with security upgrades on a machine which runs a 
display, then run those, but that's very manual.

Related: is there an RSS feed of the upgrade descriptions? I used to get one, 
but that channel has been dead for months.

-- 
Bill Davidsen <davidsen at tmr.com>
   "We have more to fear from the bungling of the incompetent than from
the machinations of the wicked."  - from Slashdot