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 Information

Status: PUBLISHED

Assigner: AMD

Published: 2022-05-10T00:00:00

Updated: 2022-05-11T16:21:04

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


Link: CVE-2021-26342

JSON object: View

cve-icon NVD Information

Status : Analyzed

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

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


Link: CVE-2021-26342

JSON object: View

cve-icon Redhat Information

No data.