CVE-2021-26409

2023-01-1020:56:47

AMD

www.cve.org

sev-es

bounds checking

attacker

reverse map table

memory integrity

7.7 High

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

9.0%

JSON

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.

CNA Affected

[
  {
    "defaultStatus": "unaffected",
    "packageName": "AGESA",
    "platforms": [
      "x86"
    ],
    "product": "3rd Gen EPYC",
    "vendor": "AMD",
    "versions": [
      {
        "status": "affected",
        "version": "various "
      }
    ]
  }
]

References

www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1032