medium
5.5
Advisory Published
Updated

CVE-2021-26355

First published: Tue Jan 10 2023(Updated: )

Insufficient fencing and checks in System Management Unit (SMU) may result in access to invalid message port registers that could result in a potential denial-of-service.

Credit: psirt@amd.com

Affected SoftwareAffected VersionHow to fix
Amd Epyc Server Firmware<milanpi-sp3_1.0.0.7
amd epyc 7003
AMD EPYC 72F3 Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 72F3 Firmware
Amd Epyc Server Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 7313P
AMD EPYC 7313P Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 7313P
Amd Epyc Server Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 7343
AMD EPYC 7373X Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 7373X
AMD EPYC 73F3 Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 73F3
AMD EPYC 7413 Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 7413 Firmware
AMD EPYC 7443 Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 7443
AMD EPYC 7443P Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 7443P
Amd Epyc Server Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 7453
AMD EPYC 74F3 Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 74F3
AMD EPYC 7513 Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 7513
Amd Epyc Server Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 7543 Firmware
AMD EPYC 7543P Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 7543P Firmware
AMD EPYC 7573X Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 7573X
AMD EPYC 75F3 Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 75F3
AMD EPYC 7643 Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 7643
AMD EPYC 7663 Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 7663 Firmware
AMD EPYC 7713P Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 7713
AMD EPYC 7713P Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 7713P Firmware
Amd Epyc Server Firmware<milanpi-sp3_1.0.0.7
amd epyc 7743
AMD EPYC 7763 Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 7763 Firmware
AMD EPYC 7773X Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 7773X

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Reference Links

Frequently Asked Questions

  • What is the vulnerability ID for this issue?

    The vulnerability ID for this issue is CVE-2021-26355.

  • What is the description of CVE-2021-26355?

    CVE-2021-26355 is a vulnerability that involves insufficient fencing and checks in the System Management Unit (SMU), which may result in access to invalid message port registers and potential denial-of-service.

  • Which software versions are affected by CVE-2021-26355?

    The affected software versions for CVE-2021-26355 are Amd Epyc 7003 Firmware up to but excluding milanpi-sp3_1.0.0.7 and Amd Epyc 72f3 Firmware up to but excluding milanpi-sp3_1.0.0.7.

  • What is the severity of CVE-2021-26355?

    CVE-2021-26355 has a severity value of 5.5, which is classified as medium.

  • How can I fix CVE-2021-26355?

    To fix CVE-2021-26355, it is recommended to apply the necessary updates or patches provided by AMD to the affected software versions.

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