On Mon, May 20, 2019 at 2:14 PM Ron Gutierrez <[email protected]> wrote:
> Hi,
>
> We need to run an upgraded version of runc to pickup a bug fix related to a 
> race condition that occurs under heavy load. This bug fix was included in the 
> runc 1.0-rc7 release. This release also contained the runc vulnerability 
> patch (CVE-2019-5736). We were hoping that by upgrading to the latest stable 
> we would receive a runc bump along with the Docker version bump to 18.06.3 
> but it doesn't look like that is the case. It looks like the runc used by 
> CoreOS is a self packaged version and you applied the CVE patch without also 
> doing a version bump.
>
> Are there any short term plans to bump the runc version to >= 1.0-rc7?

No, see https://github.com/coreos/coreos-overlay/pull/3477 .

> Is there a way for us to easily override the runc package on our CoreOS 
> builds?

You can create your own Docker torcx image based on that PR and use
the versions you want.  I don't know of issues with runc
specifiically, but updating in general beyond 18.06 causes random
segfaults (mostly with resource limiting flags).

> If so, would this be relatively safe or are there known issues with that 
> version of runc and that is why a version bump wasn't done for the 
> CVE-2019-5736 patch?

There was a version bump to 18.06.3 for the CVE.  The Container Linux
runc version always matches the one shipped with the Docker version.

Thanks.

David

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