[Bug 1813007] Re: [SRU] Unable to install new flows on compute nodes when having broken security group rules

[Corey Bryant]

** Changed in: cloud-archive/stein
     Assignee: (unassigned) => Corey Bryant (corey.bryant)

** Changed in: cloud-archive/rocky
     Assignee: (unassigned) => Corey Bryant (corey.bryant)

** Changed in: cloud-archive/queens
     Assignee: (unassigned) => Corey Bryant (corey.bryant)

** Changed in: cloud-archive/pike
     Assignee: (unassigned) => Corey Bryant (corey.bryant)

** Changed in: neutron (Ubuntu Bionic)
     Assignee: (unassigned) => Corey Bryant (corey.bryant)

** Changed in: neutron (Ubuntu Cosmic)
     Assignee: (unassigned) => Corey Bryant (corey.bryant)

** Changed in: neutron (Ubuntu Disco)
     Assignee: (unassigned) => Corey Bryant (corey.bryant)

** Changed in: cloud-archive/stein
       Status: Triaged => In Progress

** Changed in: cloud-archive/rocky
       Status: Triaged => In Progress

** Changed in: cloud-archive/queens
       Status: Triaged => In Progress

** Changed in: cloud-archive/pike
       Status: Triaged => In Progress

** Changed in: neutron (Ubuntu Disco)
       Status: Triaged => In Progress

** Changed in: neutron (Ubuntu Cosmic)
       Status: Triaged => In Progress

** Changed in: neutron (Ubuntu Bionic)
       Status: Triaged => In Progress

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https://bugs.launchpad.net/bugs/1813007

Title:
  [SRU] Unable to install new flows on compute nodes when having broken
  security group rules

Status in Ubuntu Cloud Archive:
  In Progress
Status in Ubuntu Cloud Archive pike series:
  In Progress
Status in Ubuntu Cloud Archive queens series:
  In Progress
Status in Ubuntu Cloud Archive rocky series:
  In Progress
Status in Ubuntu Cloud Archive stein series:
  In Progress
Status in neutron:
  Fix Released
Status in OpenStack Security Advisory:
  Incomplete
Status in neutron package in Ubuntu:
  In Progress
Status in neutron source package in Bionic:
  In Progress
Status in neutron source package in Cosmic:
  In Progress
Status in neutron source package in Disco:
  In Progress

Bug description:
  It appears that we have found that neutron-openvswitch-agent appears to have a bug where two security group rules that have two different port ranges that overlap tied to the same parent security group will cause neutron to not be able to configure networks on the compute nodes where those security groups are present.
  Those are the broken security rules: https://pastebin.canonical.com/p/wSy8RSXt85/
  Here is the log when we discovered the issue: https://pastebin.canonical.com/p/wvFKjNWydr/

  
  Ubuntu SRU Details
  ------------------
  [Impact]
  Neutron openvswitch agent crashes due to creation of two security groups that both use the same remote security group, where the first group doesn't define a port range and the second one does (one is a subset of the other; specifying no port range is the same as a full port range).

  [Test case]
  See comment #18 below.

  [Regression Potential]
  The fix is fairly minimal and has landed upstream in master branch. It has therefore passed all unit and function tests that get run in the upstream gate and has been reviewed by upstream neutron core reviewers. This all helps to minimize the regression potential.

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