Intel CPU (MMIO Stale Data / SBDR): Incomplete cleanup of multi-core shared buffers - stale data read across domains

CVE-2022-21123Kernel, userspace & hypervisorcurated

Impact

Incomplete cleanup of multi-core shared buffers - stale data read across domains

Who can reach it

Tenant VM guest; any tenant process in a container

What to do

Microcode + kernel mitigation + reboot; consider disabling SMT for hard-isolation tenants

References

https://access.redhat.com/security/cve/CVE-2022-21123

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.