Database/Kernel, userspace & hypervisor
Xen (x86 PV): Race condition in typeref acquisition - PV guest escalates to host privilege
CVE-2022-26362Kernel, userspace & hypervisorXSA-401curated
Impact
Race condition in typeref acquisition - PV guest escalates to host privilege
Who can reach it
Tenant VM guest (PV)
What to do
Hypervisor patch + host reboot with guest evacuation, or use Xen livepatch if the deployment supports it. Simplest structural fix: stop offering PV guests, run PVH/HVM only
References
This entry is curated: imported from vendor advisories with machine assistance, not yet individually verified. Confirm against your vendor's advisory before acting, and report anything wrong.