Comment 6 for bug 1981813
Revision history for this message
| David Wilde (dave-wilde) wrote Re: Compute service fails to restart if the vnic_type of a bound port changed from direct to macvtap | #6 |
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Title: Compute service fails to restart if the vnic_type of a bound port changed from direct to macvtap
Reporter: Balazs Gibizer (Red Hat)
Products: Nova
Affects: >=23.0.0
Description:
Balazs Gibizer with Red Hat reported a vulnerability in Nova's restart behavior when a Neutron port type is changed from "direct" to "macvtap". By creating a neutron port with vnic_type "direct", creating an instance bound to that port, and then changing the vnic_type of the bound port to "macvtap" an authenticated user may cause the compute service to fail to restart resulting in a possible denial of service.
Only Nova deployments configured with SR-IOV are affected.