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How to check kernel "livepatch" version?


On Mon, May 07, 2018 at 01:05:52PM -0700, Daniel Howard wrote:
> Regarding LSN-0037-1, posted to ubuntu-security last week: how does one
> verify that they are running a properly patched kernel? All of my apt-based
> tools refer to the kernel version as, for example, 4.4.0.121.127, but the
> security announcement refers to a "livepatch version" ... which appears to
> be a commercial subscription service.

Yes, although it's free-as-in-beer for personal use for up to three
machines.

  https://www.ubuntu.com/server/livepatch

If installed, "canonical-livepatch status" shows the livepatch version
among its output.

> If I am not a livepatch subscriber, what kernel version should I be running
> to be safe against the vulnerabilities disclosed in LSN-0037-1?

I *think* non-livepatch fixes for these are still in progress
(4.4.0-123.147, possibly), but I'm not a kernel developer so I could
well be very wrong.  My main point in sending this message was to
provide information on the status command.

-- 
Colin Watson                                       [cjwatson at ubuntu.com]