CVE-2021-26409

Insufficient bounds checking in SEV-ES may allow an attacker to corrupt Reverse Map table (RMP) memory, potentially resulting in a loss of SNP (Secure Nested Paging) memory integrity.
Classic Buffer Overflow
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
7.8 HIGH
LOCAL
LOW
LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AMDCNA
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CVEADP
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CISA-ADPADP
7.8 HIGH
LOCAL
LOW
LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 22%
VendorProductVersion
amdmilanpi_firmware
𝑥
< 1.0.0.3
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1032
https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1032