medium
4.9
CWE
125
Advisory Published
Updated

CVE-2021-26345

First published: Tue Nov 14 2023(Updated: )

Failure to validate the value in APCB may allow a privileged attacker to tamper with the APCB token to force an out-of-bounds memory read potentially resulting in a denial of service.

Credit: psirt@amd.com

Affected SoftwareAffected VersionHow to fix
All of
AMD EPYC 7H12 Firmware<romepi_1.0.0.f
AMD EPYC 7H12 Firmware
All of
AMD EPYC 7F72<romepi_1.0.0.f
AMD EPYC 7F72 Firmware
All of
AMD EPYC 7F52 Firmware<romepi_1.0.0.f
AMD EPYC 7F52 Firmware
All of
AMD EPYC 7F32 Firmware<romepi_1.0.0.f
AMD EPYC 7F32 Firmware
All of
AMD EPYC 7742 Firmware<romepi_1.0.0.f
AMD EPYC Server
All of
AMD EPYC 7702 Firmware<romepi_1.0.0.f
AMD EPYC 7702P
All of
AMD EPYC 7702p firmware<romepi_1.0.0.f
AMD EPYC Server
All of
AMD EPYC 7662 Firmware<romepi_1.0.0.f
AMD EPYC 7662 Firmware
All of
AMD EPYC 7642 Firmware<romepi_1.0.0.f
AMD EPYC 7642 Firmware
All of
AMD EPYC 7552 Firmware<romepi_1.0.0.f
AMD EPYC 7552 Firmware
All of
AMD EPYC 7542 Firmware<romepi_1.0.0.f
AMD EPYC Server
All of
AMD EPYC 7532 Firmware<romepi_1.0.0.f
AMD EPYC 7532 Firmware
All of
AMD EPYC 7502P Firmware<romepi_1.0.0.f
AMD EPYC 7502P Firmware
All of
AMD EPYC 7502 Firmware<romepi_1.0.0.f
AMD EPYC 7502 firmware
All of
AMD EPYC 7452 Firmware<romepi_1.0.0.f
AMD EPYC Server
All of
AMD EPYC 7402P Firmware<romepi_1.0.0.f
AMD EPYC 7402P Firmware
All of
Amd Epyc Server Firmware<romepi_1.0.0.f
AMD EPYC 7402 Firmware
All of
AMD EPYC Firmware<romepi_1.0.0.f
AMD EPYC 7352 firmware
All of
AMD EPYC 7302P Firmware<romepi_1.0.0.f
AMD EPYC 7302P Firmware
All of
Amd Epyc Server Firmware<romepi_1.0.0.f
AMD EPYC 7302 Firmware
All of
AMD EPYC 7282 Firmware<romepi_1.0.0.f
AMD EPYC 7282 Firmware
All of
AMD EPYC 7272 firmware<romepi_1.0.0.f
AMD EPYC 7272 firmware
All of
AMD EPYC 7262 Firmware<romepi_1.0.0.f
AMD EPYC 7262 Firmware
All of
AMD EPYC 7252 Firmware<romepi_1.0.0.f
AMD EPYC 7252 Firmware
All of
AMD EPYC 7232p firmware<romepi_1.0.0.f
AMD EPYC 7232p firmware
All of
AMD EPYC 7203 Firmware<milanpi_1.0.0.a
AMD EPYC 7203 Firmware
All of
AMD EPYC Firmware<milanpi_1.0.0.a
AMD EPYC 7203P Firmware
All of
AMD EPYC 72F3 Firmware<milanpi_1.0.0.a
AMD EPYC 72F3 Firmware
All of
AMD EPYC 7303 Firmware<milanpi_1.0.0.a
AMD EPYC 7303 Firmware
All of
AMD EPYC 7303P Firmware<milanpi_1.0.0.a
AMD EPYC 7303P
All of
AMD EPYC Firmware<milanpi_1.0.0.a
AMD EPYC 7313 Firmware
All of
AMD EPYC 7313P Firmware<milanpi_1.0.0.a
AMD EPYC 7313P Firmware
All of
Amd Epyc Server Firmware<milanpi_1.0.0.a
AMD EPYC 7343 Firmware
All of
AMD EPYC 73F3 Firmware<milanpi_1.0.0.a
AMD EPYC 73F3 Firmware
All of
AMD EPYC 7373X Firmware<milanpi_1.0.0.a
AMD EPYC 7373X Firmware
All of
AMD EPYC 7413 Firmware<milanpi_1.0.0.a
AMD EPYC 7413 Firmware
All of
AMD EPYC 7443P Firmware<milanpi_1.0.0.a
AMD EPYC 7443P
All of
AMD EPYC 7443P Firmware<milanpi_1.0.0.a
AMD EPYC 7443P Firmware
All of
AMD EPYC 74F3 Firmware<milanpi_1.0.0.a
AMD EPYC 74F3 Firmware
All of
Amd Epyc Server Firmware<milanpi_1.0.0.a
AMD EPYC Server
All of
AMD EPYC 7473X Firmware<milanpi_1.0.0.a
AMD EPYC 7473X Firmware
All of
AMD EPYC 7513 Firmware<milanpi_1.0.0.a
AMD EPYC 7513 Firmware
All of
Amd Epyc Server Firmware<milanpi_1.0.0.a
AMD EPYC 7543 Firmware
All of
AMD EPYC 7543P Firmware<milanpi_1.0.0.a
AMD EPYC 7543P Firmware
All of
AMD EPYC 75F3 Firmware<milanpi_1.0.0.a
AMD EPYC 75F3 Firmware
All of
AMD EPYC 7573X Firmware<milanpi_1.0.0.a
AMD EPYC 7573X Firmware
All of
AMD EPYC 7643P Firmware<milanpi_1.0.0.a
AMD EPYC 7643 Firmware
All of
AMD EPYC 7773X Firmware<milanpi_1.0.0.a
AMD EPYC 7773X Firmware
All of
AMD EPYC Firmware<milanpi_1.0.0.a
AMD EPYC 7643P Firmware
All of
AMD EPYC 7663 Firmware<milanpi_1.0.0.a
AMD EPYC 7663 Firmware
All of
AMD EPYC 7663P Firmware<milanpi_1.0.0.a
AMD EPYC 7663P Firmware
All of
AMD EPYC 7713P Firmware<milanpi_1.0.0.a
AMD EPYC 7713 Firmware
All of
AMD EPYC 7713P Firmware<milanpi_1.0.0.a
AMD EPYC 7713P Firmware
All of
AMD EPYC 7763 Firmware<milanpi_1.0.0.a
AMD EPYC 7763 Firmware
All of
AMD EPYC 8024PN Firmware<genoapi_1.0.0.0
AMD EPYC 8024PN Firmware
All of
AMD EPYC 8024PN Firmware<genoapi_1.0.0.0
AMD EPYC 8024PN Firmware
All of
AMD EPYC 8124PN<genoapi_1.0.0.0
AMD EPYC 8124PN Firmware
All of
AMD EPYC Firmware<genoapi_1.0.0.0
AMD EPYC 8124P Firmware
All of
AMD EPYC 8224PN Firmware<genoapi_1.0.0.0
AMD EPYC 8224PN Firmware
All of
AMD EPYC 8224PN Firmware<genoapi_1.0.0.0
AMD EPYC 8224P Firmware
All of
AMD EPYC 8324PN Firmware<genoapi_1.0.0.0
AMD EPYC 8324PN Firmware
All of
AMD EPYC 8324P Firmware<genoapi_1.0.0.0
AMD EPYC 8324P Firmware
All of
AMD EPYC 8434P Firmware<genoapi_1.0.0.0
AMD EPYC 8434PN Firmware
All of
AMD EPYC 8434P Firmware<genoapi_1.0.0.0
AMD EPYC 8434P Firmware
All of
AMD EPYC 8534PN Firmware<genoapi_1.0.0.0
AMD EPYC 8534PN Firmware
All of
AMD EPYC Firmware<genoapi_1.0.0.0
AMD EPYC 8534P Firmware
All of
AMD EPYC 9734 Firmware<genoapi_1.0.0.0
AMD EPYC 9734 Firmware
All of
AMD EPYC 9754S Firmware<genoapi_1.0.0.0
AMD EPYC 9754S Firmware
All of
Amd Epyc Server Firmware<genoapi_1.0.0.0
AMD EPYC 9754 Firmware
All of
AMD EPYC 9184X Firmware<genoapi_1.0.0.0
AMD EPYC 9184X firmware
All of
AMD EPYC 9384X Firmware<genoapi_1.0.0.0
AMD EPYC 9384X Firmware
All of
AMD EPYC 9684X Firmware<genoapi_1.0.0.0
AMD EPYC 9684X Firmware
All of
AMD EPYC 9124 Firmware<genoapi_1.0.0.0
AMD EPYC 9124 Firmware
All of
AMD EPYC 9174F Firmware<genoapi_1.0.0.0
AMD EPYC 9174F Firmware
All of
AMD EPYC 9224 Firmware<genoapi_1.0.0.0
AMD EPYC 9224
All of
AMD EPYC 9254 Firmware<genoapi_1.0.0.0
AMD EPYC 9254 Firmware
All of
AMD EPYC 9274F Firmware<genoapi_1.0.0.0
AMD EPYC 9274F Firmware
All of
AMD EPYC 9334 firmware<genoapi_1.0.0.0
AMD EPYC 9334 firmware
All of
AMD EPYC 9354 Firmware<genoapi_1.0.0.0
AMD EPYC 9354P
All of
AMD EPYC 9354P Firmware<genoapi_1.0.0.0
AMD EPYC 9354P
All of
AMD EPYC 9374F Firmware<genoapi_1.0.0.0
AMD EPYC 9374F Firmware
All of
AMD EPYC 9454P Firmware<genoapi_1.0.0.0
AMD EPYC 9454P
All of
AMD EPYC 9454P Firmware<genoapi_1.0.0.0
AMD EPYC 9454P Firmware
All of
AMD EPYC 9474F Firmware<genoapi_1.0.0.0
AMD Epyc 9474F Firmware
All of
AMD EPYC 9534 Firmware<genoapi_1.0.0.0
AMD EPYC 9534 Firmware
All of
AMD EPYC 9554P Firmware<genoapi_1.0.0.0
AMD EPYC 9554 Firmware
All of
AMD EPYC 9554P Firmware<genoapi_1.0.0.0
AMD EPYC 9554P
All of
AMD EPYC 9634 Firmware<genoapi_1.0.0.0
AMD EPYC 9634 Firmware
All of
AMD EPYC 9654 Firmware<genoapi_1.0.0.0
AMD EPYC 9654 firmware
All of
AMD EPYC 9654P Firmware<genoapi_1.0.0.0
AMD EPYC 9654P Firmware

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2021-26345?

    The severity of CVE-2021-26345 is considered high due to its potential to enable denial of service through out-of-bounds memory reads.

  • How do I fix CVE-2021-26345?

    To remediate CVE-2021-26345, update to the latest firmware versions provided by AMD for affected EPYC processors.

  • What types of systems are affected by CVE-2021-26345?

    CVE-2021-26345 affects specific firmware versions of AMD EPYC processors, particularly those with versions below romepi_1.0.0.f.

  • Can CVE-2021-26345 be exploited remotely?

    Yes, CVE-2021-26345 can potentially be exploited by a privileged attacker with access to the system.

  • What are the potential consequences of CVE-2021-26345 exploitation?

    Exploitation of CVE-2021-26345 could lead to system instability, resulting in a denial of service condition.

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