In SEV guest VMs, the CPU may fail to flush the Translation Lookaside Buffer (TLB) following a particular sequence of operations that includes creation of a new virtual machine control block (VMCB). The failure to flush the TLB may cause the microcode to use stale TLB translations which may allow for disclosure of SEV guest memory contents. Users of SEV-ES/SEV-SNP guest VMs are not impacted by this vulnerability.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: AMD

Published: 2022-05-11T16:21:04.403325Z

Updated: 2024-09-16T16:32:42.078Z

Reserved: 2021-01-29T00:00:00

Link: CVE-2021-26342

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2022-05-11T17:15:08.297

Modified: 2022-05-19T20:05:04.317

Link: CVE-2021-26342

cve-icon Redhat

No data.