@stormi I'm also getting error on some VMs while trying to export a disk and also trying to even start some VMs from NFS (that were fine before).
xo-server[565]: 2026-05-13T02:53:15.746Z xo:api WARN admin | vm.start(...) [2s] =!> XapiError: INTERNAL_ERROR(xenopsd internal error: Storage_error ([S(Illegal_transition);[[S(Activated);S(RO)];[S(Activated);S(RW)]]]))
xo-server[565]: 2026-05-13T02:53:40.652Z xo:api WARN admin | vm.start(...) [3s] =!> XapiError: SR_BACKEND_FAILURE_46(, The VDI is not available [opterr=VDI 399734eb-5965-4799-ac36-f6dd774db867 not detached cleanly], )
@semarie Thank you for the heads up.
@rvreugde I should add an important caveat. Because this is a Local Privilege Escalation (LPE) vulnerability, it requires local access to execute. If you haven't provisioned any unprivileged accounts in Dom0, your exposure is minimal, as an attacker would already need an existing foothold in the host operating system to leverage these exploits.
@Mathieu-L
linstor n l was included in my original post.
All nodes were updated to May 2026 Security and Maintenance Updates for XCP-ng 8.3 LTS, all nodes were restarted.
May 2026 Updates #2 for XCP-ng 8.3 LTS was released, and a couple days later I installed on all hosts. No host restarted.
When xen04 was restarted, that is when this issue happened.
I had used systemctl restart linstor-controller here (https://xcp-ng.org/forum/post/105309) to restart the controller.
