high
7.8
CWE
20
Advisory Published
Updated

CVE-2021-26331: Input Validation

First published: Tue Nov 16 2021(Updated: )

AMD System Management Unit (SMU) contains a potential issue where a malicious user may be able to manipulate mailbox entries leading to arbitrary code execution.

Credit: psirt@amd.com

Affected SoftwareAffected VersionHow to fix
AMD EPYC 7003 Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7003 Firmware
AMD EPYC 7002 Firmware<romepi-sp3_1.0.0.c
AMD EPYC Server
Amd Epyc Server Firmware<naplespi-sp3_1.0.0.g
AMD EPYC 7001 Firmware
AMD EPYC 72F3 Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 72F3 Firmware
AMD EPYC Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7313 Firmware
AMD EPYC 7313P Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7313P Firmware
Amd Epyc Server Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7343 Firmware
AMD EPYC 73F3 Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 73F3 Firmware
AMD EPYC 7413 Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7413 Firmware
AMD EPYC 7443P Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7443P
AMD EPYC 7443P Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7443P Firmware
Amd Epyc Server Firmware<milanpi-sp3_1.0.0.4
AMD EPYC Server
AMD EPYC 74F3 Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 74F3 Firmware
AMD EPYC 7513 Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7513 Firmware
Amd Epyc Server Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7543 Firmware
AMD EPYC 7543P Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7543P Firmware
AMD EPYC 75F3 Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 75F3 Firmware
AMD EPYC 7643P Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7643 Firmware
AMD EPYC 7663 Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7663 Firmware
AMD EPYC 7713P Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7713 Firmware
AMD EPYC 7713P Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7713P Firmware
AMD EPYC 7763 Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7763 Firmware
AMD EPYC 7232p firmware<romepi-sp3_1.0.0.c
AMD EPYC 7232p firmware
AMD EPYC 7252 Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7252 Firmware
AMD EPYC 7262 Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7262 Firmware
AMD EPYC 7272 firmware<romepi-sp3_1.0.0.c
AMD EPYC 7272 firmware
AMD EPYC 7282 Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7282 Firmware
Amd Epyc Server Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7302 Firmware
AMD EPYC 7302P Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7302P Firmware
AMD EPYC Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7352 firmware
Amd Epyc Server Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7402 Firmware
AMD EPYC 7402P Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7402P Firmware
AMD EPYC 7452 Firmware<romepi-sp3_1.0.0.c
AMD EPYC Server
AMD EPYC 7502 Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7502 firmware
AMD EPYC 7502P Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7502P Firmware
AMD EPYC 7532 Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7532 Firmware
AMD EPYC 7542 Firmware<romepi-sp3_1.0.0.c
AMD EPYC Server
AMD EPYC 7552 Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7552 Firmware
AMD EPYC 7642 Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7642 Firmware
AMD EPYC 7662 Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7662 Firmware
AMD EPYC 7702p firmware<romepi-sp3_1.0.0.c
AMD EPYC Server
AMD EPYC 7702 Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7702P
AMD EPYC 7742 Firmware<romepi-sp3_1.0.0.c
AMD EPYC Server
AMD EPYC 7F32 Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7F32 Firmware
AMD EPYC 7F52 Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7F52 Firmware
AMD EPYC 7F72<romepi-sp3_1.0.0.c
AMD EPYC 7F72 Firmware
AMD EPYC 7251 Firmware<naplespi-sp3_1.0.0.g
AMD EPYC 7251 Firmware
Amd Epyc Server Firmware<naplespi-sp3_1.0.0.g
AMD EPYC Server
Amd Epyc Server Firmware<naplespi-sp3_1.0.0.g
AMD EPYC 7301 Firmware
AMD EPYC 7351P Firmware<naplespi-sp3_1.0.0.g
AMD EPYC 7351 Firmware
AMD EPYC 7351P Firmware<naplespi-sp3_1.0.0.g
AMD EPYC 7351P Firmware
AMD EPYC 7401P Firmware<naplespi-sp3_1.0.0.g
AMD EPYC 7401 Firmware
AMD EPYC 7401P Firmware<naplespi-sp3_1.0.0.g
AMD EPYC 7401P Firmware
AMD EPYC 7451 Firmware<naplespi-sp3_1.0.0.g
AMD EPYC 7451 Firmware
AMD EPYC 7501 Firmware<naplespi-sp3_1.0.0.g
AMD EPYC Server
AMD EPYC 7551P Firmware<naplespi-sp3_1.0.0.g
AMD EPYC 7551 Firmware
AMD EPYC 7551P Firmware<naplespi-sp3_1.0.0.g
AMD EPYC 7551P Firmware
AMD EPYC 7601 Firmware<naplespi-sp3_1.0.0.g
AMD EPYC 7601 Firmware

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2021-26331?

    CVE-2021-26331 has been rated as a critical vulnerability due to its potential for arbitrary code execution.

  • How do I fix CVE-2021-26331?

    To remediate CVE-2021-26331, it is recommended to update the AMD EPYC firmware to the latest version provided by AMD.

  • Which software is affected by CVE-2021-26331?

    CVE-2021-26331 affects multiple versions of AMD EPYC firmware, specifically those prior to milanpi-sp3_1.0.0.4 and romepi-sp3_1.0.0.c.

  • What type of attack can exploit CVE-2021-26331?

    CVE-2021-26331 can be exploited by a malicious user manipulating mailbox entries to execute arbitrary code.

  • Is there a workaround for CVE-2021-26331?

    No specific workaround is available for CVE-2021-26331; updating the affected firmware is the recommended course of action.

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