Comment 75 for bug 2071734

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sean mooney (sean-k-mooney) wrote : Re: Incomplete file access fix and regression for QCOW2 backing files and VMDK flat descriptors (CVE-2024-40767)

ill need to test this again with master on Monday

if we boot a VM form a bad image it will be blocked and end up not having any host.
so if you rescue that with any image you should get a 409 conflict as the VM is not on any host
as i noted in https://bugs.launchpad.net/nova/+bug/2071734/comments/71

and if you do it the other way (boot form a good image and rescue with a blocked one)

rescue fails as i noted in
https://bugs.launchpad.net/nova/+bug/2071734/comments/70

so at least with a quick attempt i didn't reproduce the behavior you said in
https://bugs.launchpad.net/nova/+bug/2071734/comments/74

did you use an image that was in the image cache ?

part of the mitigation of this requires that you first purge any bad images form the image cache on the compute node