Home/CVE/Failure to validate VM_HSAVE_PA during SNP_INIT may result in a loss of memory integrity.
CVE

CVE-2021-26326

Failure to validate VM_HSAVE_PA during SNP_INIT may result in a loss of memory integrity.

Failure to validate VM_HSAVE_PA during SNP_INIT may result in a loss of memory integrity.

HIGH · CVSS 7.8 EPSS 0.00127
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-665Improper Initialization
CWE-665Improper Initialization
▤

Affected Products & Versions

20
amd epyc 7232p firmware< romepi-sp3_1.0.0.c
amd epyc 7763 firmware< milanpi-sp3_1.0.0.4
amd epyc 7713p firmware< milanpi-sp3_1.0.0.4
amd epyc 7713 firmware< milanpi-sp3_1.0.0.4
amd epyc 7663 firmware< milanpi-sp3_1.0.0.4
amd epyc 7643 firmware< milanpi-sp3_1.0.0.4
amd epyc 75f3 firmware< milanpi-sp3_1.0.0.4
amd epyc 7543p firmware< milanpi-sp3_1.0.0.4
▣

Scoring & Timeline

7.8
HIGH · CVSS v3.1 · psirt@amd.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD16 Nov 2021 · 06:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1021Vendor Advisory
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