CVE-2021-26404: Input Validation

Published Jan 10, 2023
·
Updated

Improper input validation and bounds checking in SEV firmware may leak scratch buffer bytes leading to potential information disclosure.

Affected Software

92 affected components
AMD Epyc 7003 Firmware<milanpi-sp3_1.0.0.9
AMD Epyc 7003
AMD Epyc 7313 Firmware<milanpi-sp3_1.0.0.9
AMD Epyc 7313
AMD Epyc 7313p Firmware<milanpi-sp3_1.0.0.9
AMD Epyc 7313p
AMD Epyc 7343 Firmware<milanpi-sp3_1.0.0.9
AMD Epyc 7343
AMD Epyc 7373x Firmware<milanpi-sp3_1.0.0.9
AMD Epyc 7373x
AMD Epyc 73f3 Firmware<milanpi-sp3_1.0.0.9
AMD Epyc 73f3
AMD Epyc 7413 Firmware<milanpi-sp3_1.0.0.9
AMD Epyc 7413
AMD Epyc 7443 Firmware<milanpi-sp3_1.0.0.9
AMD Epyc 7443
AMD Epyc 7443p Firmware<milanpi-sp3_1.0.0.9
AMD Epyc 7443p
AMD Epyc 7453 Firmware<milanpi-sp3_1.0.0.9
AMD Epyc 7453
AMD Epyc 7473x Firmware<milanpi-sp3_1.0.0.9
AMD Epyc 7473x
AMD Epyc 74f3 Firmware<milanpi-sp3_1.0.0.9
AMD Epyc 74f3
AMD Epyc 7513 Firmware<milanpi-sp3_1.0.0.9
AMD Epyc 7513
AMD Epyc 7543 Firmware<milanpi-sp3_1.0.0.9
AMD Epyc 7543
AMD Epyc 7543p Firmware<milanpi-sp3_1.0.0.9
AMD Epyc 7543p
AMD Epyc 7573x Firmware<milanpi-sp3_1.0.0.9
AMD Epyc 7573x
AMD Epyc 7643 Firmware<milanpi-sp3_1.0.0.9
AMD Epyc 7643
AMD Epyc 75f3 Firmware<milanpi-sp3_1.0.0.9
AMD Epyc 75f3
AMD Epyc 7663 Firmware<milanpi-sp3_1.0.0.9
AMD Epyc 7663
AMD Epyc 7713 Firmware<milanpi-sp3_1.0.0.9
AMD Epyc 7713
AMD Epyc 7713p Firmware<milanpi-sp3_1.0.0.9
AMD Epyc 7713p
AMD Epyc 7763 Firmware<milanpi-sp3_1.0.0.9
AMD Epyc 7763
AMD Epyc 7773x Firmware<milanpi-sp3_1.0.0.9
AMD Epyc 7773x
All of the following
AMD Epyc 7003 Firmware<milanpi-sp3_1.0.0.9
AMD Epyc 7003
All of the following
AMD Epyc 7313 Firmware<milanpi-sp3_1.0.0.9
AMD Epyc 7313
All of the following
AMD Epyc 7313p Firmware<milanpi-sp3_1.0.0.9
AMD Epyc 7313p
All of the following
AMD Epyc 7343 Firmware<milanpi-sp3_1.0.0.9
AMD Epyc 7343
All of the following
AMD Epyc 7373x Firmware<milanpi-sp3_1.0.0.9
AMD Epyc 7373x
All of the following
AMD Epyc 73f3 Firmware<milanpi-sp3_1.0.0.9
AMD Epyc 73f3
All of the following
AMD Epyc 7413 Firmware<milanpi-sp3_1.0.0.9
AMD Epyc 7413
All of the following
AMD Epyc 7443 Firmware<milanpi-sp3_1.0.0.9
AMD Epyc 7443
All of the following
AMD Epyc 7443p Firmware<milanpi-sp3_1.0.0.9
AMD Epyc 7443p
All of the following
AMD Epyc 7453 Firmware<milanpi-sp3_1.0.0.9
AMD Epyc 7453
All of the following
AMD Epyc 7473x Firmware<milanpi-sp3_1.0.0.9
AMD Epyc 7473x
All of the following
AMD Epyc 74f3 Firmware<milanpi-sp3_1.0.0.9
AMD Epyc 74f3
All of the following
AMD Epyc 7513 Firmware<milanpi-sp3_1.0.0.9
AMD Epyc 7513
All of the following
AMD Epyc 7543 Firmware<milanpi-sp3_1.0.0.9
AMD Epyc 7543
All of the following
AMD Epyc 7543p Firmware<milanpi-sp3_1.0.0.9
AMD Epyc 7543p
All of the following
AMD Epyc 7573x Firmware<milanpi-sp3_1.0.0.9
AMD Epyc 7573x
All of the following
AMD Epyc 7643 Firmware<milanpi-sp3_1.0.0.9
AMD Epyc 7643
All of the following
AMD Epyc 75f3 Firmware<milanpi-sp3_1.0.0.9
AMD Epyc 75f3
All of the following
AMD Epyc 7663 Firmware<milanpi-sp3_1.0.0.9
AMD Epyc 7663
All of the following
AMD Epyc 7713 Firmware<milanpi-sp3_1.0.0.9
AMD Epyc 7713
All of the following
AMD Epyc 7713p Firmware<milanpi-sp3_1.0.0.9
AMD Epyc 7713p
All of the following
AMD Epyc 7763 Firmware<milanpi-sp3_1.0.0.9
AMD Epyc 7763
All of the following
AMD Epyc 7773x Firmware<milanpi-sp3_1.0.0.9
AMD Epyc 7773x

Event History

Jan 10, 2023
CVE Published
via MITRE·08:56 PM
Data Sourced
via MITRE·08:56 PM
Description
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Frequently Asked Questions

1

What is the vulnerability ID for this vulnerability?

The vulnerability ID for this vulnerability is CVE-2021-26404.

2

What is the severity of CVE-2021-26404?

The severity of CVE-2021-26404 is medium with a severity value of 5.5.

3

Which software products are affected by CVE-2021-26404?

The affected software products include Amd Epyc 7003 Firmware (milanpi-sp3_1.0.0.9), Amd Epyc 7313 Firmware (milanpi-sp3_1.0.0.9), Amd Epyc 7313p Firmware (milanpi-sp3_1.0.0.9), Amd Epyc 7343 Firmware (milanpi-sp3_1.0.0.9), Amd Epyc 7373x Firmware (milanpi-sp3_1.0.0.9), Amd Epyc 73f3 Firmware (milanpi-sp3_1.0.0.9), Amd Epyc 7413 Firmware (milanpi-sp3_1.0.0.9), Amd Epyc 7443 Firmware (milanpi-sp3_1.0.0.9), Amd Epyc 7443p Firmware (milanpi-sp3_1.0.0.9), Amd Epyc 7453 Firmware (milanpi-sp3_1.0.0.9), Amd Epyc 7473x Firmware (milanpi-sp3_1.0.0.9), Amd Epyc 74f3 Firmware (milanpi-sp3_1.0.0.9), Amd Epyc 7513 Firmware (milanpi-sp3_1.0.0.9), Amd Epyc 7543 Firmware (milanpi-sp3_1.0.0.9), Amd Epyc 7543p Firmware (milanpi-sp3_1.0.0.9), Amd Epyc 7573x Firmware (milanpi-sp3_1.0.0.9), Amd Epyc 7643 Firmware (milanpi-sp3_1.0.0.9), Amd Epyc 75f3 Firmware (milanpi-sp3_1.0.0.9), Amd Epyc 7663 Firmware (milanpi-sp3_1.0.0.9), Amd Epyc 7713 Firmware (milanpi-sp3_1.0.0.9), Amd Epyc 7713p Firmware (milanpi-sp3_1.0.0.9), Amd Epyc 7763 Firmware (milanpi-sp3_1.0.0.9), Amd Epyc 7773x Firmware (milanpi-sp3_1.0.0.9).

4

What is the description of CVE-2021-26404?

CVE-2021-26404 is a vulnerability in SEV firmware that may leak scratch buffer bytes, potentially leading to information disclosure.

5

Is there a fix available for CVE-2021-26404?

Please refer to the reference link provided by AMD for information on available fixes for CVE-2021-26404.

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