CWE
20
Advisory Published
Updated

CVE-2021-26404: Input Validation

First published: Wed Jan 11 2023(Updated: )

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

Credit: psirt@amd.com

Affected SoftwareAffected VersionHow to fix
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

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Frequently Asked Questions

  • What is the vulnerability ID for this vulnerability?

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

  • What is the severity of CVE-2021-26404?

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

  • 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).

  • 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.

  • 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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