github - ghsa-wp53-p3r5-cq4w

ghsa-wp53-p3r5-cq4w

Vulnerability from github

Published

2022-05-12 00:01

Modified

2022-05-20 00:00

Severity

3.3 (Low) - CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Details

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.

Show details on source website

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  "affected": [],
  "aliases": [
    "CVE-2021-26342"
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  "database_specific": {
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    "github_reviewed": false,
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  "id": "GHSA-wp53-p3r5-cq4w",
  "modified": "2022-05-20T00:00:25Z",
  "published": "2022-05-12T00:01:28Z",
  "references": [
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    },
    {
      "type": "WEB",
      "url": "https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1028"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

cve-2021-26342

Vulnerability from cvelistv5

Published

2022-05-11 16:21

Modified

2024-09-16 16:32

Severity

Summary

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.

References

URL	Tags
https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1028	x_refsource_MISC

Impacted products

Vendor	Product
AMD	EPYC™ Processors

Show details on NVD website

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