Home/CVE/A TOCTOU race condition in SMU may allow for the caller to obtain and manipulate the address of a message port register
CVE

CVE-2021-26350

A TOCTOU race condition in SMU may allow for the caller to obtain and manipulate the address of a message port register

A TOCTOU race condition in SMU may allow for the caller to obtain and manipulate the address of a message port register which may result in a potential denial of service.

MEDIUM · CVSS 4.7 EPSS 0.00039
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-367Time-of-check Time-of-use (TOCTOU) Race Condition
▤

Affected Products & Versions

44
amd epyc 7232p firmware< romepi-sp3_1.0.0.d
amd epyc 7302p firmware< romepi-sp3_1.0.0.d
amd epyc 7402p firmware< romepi-sp3_1.0.0.d
amd epyc 7502p firmware< romepi-sp3_1.0.0.d
amd epyc 7702p firmware< romepi-sp3_1.0.0.d
amd epyc 7252 firmware< romepi-sp3_1.0.0.d
amd epyc 7262 firmware< romepi-sp3_1.0.0.d
amd epyc 7272 firmware< romepi-sp3_1.0.0.d
▣

Scoring & Timeline

4.7
MEDIUM · 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 NVD11 May 2022 · 05:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
⚑

Vendor Advisories

5
suse-csafSUSE-SU-2022:1923-1
suse-csafSUSE-SU-2022:1840-1
suse-csafSUSE-SU-2022:1846-1
suse-csafSUSE-SU-2022:1847-1
suse-csafSUSE-SU-2022:1751-1
🔗

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-1028Vendor Advisory
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