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.
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Advisories
| Source | ID | Title |
|---|---|---|
EUVD |
EUVD-2021-13148 | 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. |
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
No history.
Projects
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Status: PUBLISHED
Assigner: AMD
Published:
Updated: 2024-09-16T16:32:42.078Z
Reserved: 2021-01-29T00:00:00
Link: CVE-2021-26342
No data.
Status : Modified
Published: 2022-05-11T17:15:08.297
Modified: 2024-11-21T05:56:09.363
Link: CVE-2021-26342
No data.
OpenCVE Enrichment
No data.
Weaknesses
EUVD