medium
5.5
CWE
668 665
Advisory Published
CVE Published
Updated

CVE-2021-26312

First published: Tue Nov 16 2021(Updated: )

Failure to flush the Translation Lookaside Buffer (TLB) of the I/O memory management unit (IOMMU) may lead an IO device to write to memory it should not be able to access, resulting in a potential loss of integrity.

Credit: psirt@amd.com

Affected SoftwareAffected VersionHow to fix
AMD EPYC 7601 Firmware<naplespi-sp3_1.0.0.g
AMD EPYC 7601 Firmware
AMD EPYC 7551P Firmware<naplespi-sp3_1.0.0.g
AMD EPYC 7551P Firmware
AMD EPYC 7551P Firmware<naplespi-sp3_1.0.0.g
AMD EPYC 7551 Firmware
AMD EPYC 7501 Firmware<naplespi-sp3_1.0.0.g
AMD EPYC Server
AMD EPYC 7451 Firmware<naplespi-sp3_1.0.0.g
AMD EPYC 7451 Firmware
AMD EPYC 7401P Firmware<naplespi-sp3_1.0.0.g
AMD EPYC 7401 Firmware
AMD EPYC 7371 Firmware<naplespi-sp3_1.0.0.g
AMD EPYC 7371 Firmware
AMD EPYC 7351P Firmware<naplespi-sp3_1.0.0.g
AMD EPYC 7351P Firmware
AMD EPYC 7351P Firmware<naplespi-sp3_1.0.0.g
AMD EPYC 7351 Firmware
Amd Epyc Server Firmware<naplespi-sp3_1.0.0.g
AMD EPYC 7301 Firmware
Amd Epyc Server Firmware<naplespi-sp3_1.0.0.g
AMD EPYC Server
AMD EPYC 7261 Firmware<naplespi-sp3_1.0.0.g
AMD EPYC 7261
AMD EPYC 7251 Firmware<naplespi-sp3_1.0.0.g
AMD EPYC 7251 Firmware
AMD EPYC 7F72<romepi-sp3_1.0.0.c
AMD EPYC 7F72 Firmware
AMD EPYC 7F52 Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7F52 Firmware
AMD EPYC 7F32 Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7F32 Firmware
AMD EPYC 7H12 Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7H12 Firmware
AMD EPYC 7742 Firmware<romepi-sp3_1.0.0.c
AMD EPYC Server
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 7662 Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7662 Firmware
AMD EPYC 7642 Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7642 Firmware
AMD EPYC 7552 Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7552 Firmware
AMD EPYC 7542 Firmware<romepi-sp3_1.0.0.c
AMD EPYC Server
AMD EPYC 7532 Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7532 Firmware
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 7452 Firmware<romepi-sp3_1.0.0.c
AMD EPYC Server
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 Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7352 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 7282 Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7282 Firmware
AMD EPYC 7272 firmware<romepi-sp3_1.0.0.c
AMD EPYC 7272 firmware
AMD EPYC 7262 Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7262 Firmware
AMD EPYC 7252 Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7252 Firmware
AMD EPYC 7232p firmware<romepi-sp3_1.0.0.c
AMD EPYC 7232p firmware
AMD EPYC 7763 Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7763 Firmware
AMD EPYC 7713P Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7713P Firmware
AMD EPYC 7713P Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7713 Firmware
AMD EPYC 7663 Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7663 Firmware
AMD EPYC 7643P Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7643 Firmware
AMD EPYC 75F3 Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 75F3 Firmware
AMD EPYC 7543P Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7543P Firmware
Amd Epyc Server Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7543 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 Server
AMD EPYC 74F3 Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 74F3 Firmware
AMD EPYC 7443P Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7443P Firmware
AMD EPYC 7443P Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7443P
AMD EPYC 7413 Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7413 Firmware
AMD EPYC 73F3 Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 73F3 Firmware
Amd Epyc Server Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7343 Firmware
AMD EPYC 7313P Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7313P Firmware
AMD EPYC Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7313 Firmware
AMD EPYC 72F3 Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 72F3 Firmware

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2021-26312?

    CVE-2021-26312 is categorized as a potential integrity vulnerability due to improper flushing of the Translation Lookaside Buffer (TLB).

  • How can I mitigate CVE-2021-26312?

    To mitigate CVE-2021-26312, ensure that your AMD EPYC firmware is updated to a version that addresses this vulnerability.

  • Which AMD EPYC firmware versions are affected by CVE-2021-26312?

    CVE-2021-26312 affects various AMD EPYC firmware versions prior to 'naplespi-sp3_1.0.0.g' and 'romepi-sp3_1.0.0.c'.

  • Can CVE-2021-26312 result in data breaches?

    Yes, CVE-2021-26312 may lead to unauthorized access to memory, potentially resulting in data integrity issues.

  • Is there a patch for CVE-2021-26312?

    Yes, AMD has released firmware updates to patch CVE-2021-26312 and maintain system security.

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