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
All of
AMD EPYC 7F72 Firmware<romepi_1.0.0.f
AMD EPYC 7F72
All of
AMD EPYC 7F52 Firmware<romepi_1.0.0.f
AMD EPYC 7F52
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 7742 firmware
All of
AMD EPYC 7702 Firmware<romepi_1.0.0.f
AMD EPYC 7702p
All of
AMD EPYC 7702 Firmware<romepi_1.0.0.f
AMD EPYC 7702
All of
AMD EPYC 7662 Firmware<romepi_1.0.0.f
AMD EPYC 7662
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 Embedded 7552
All of
AMD EPYC 7542 Firmware<romepi_1.0.0.f
AMD EPYC 7542
All of
AMD EPYC 7532 Firmware<romepi_1.0.0.f
AMD EPYC 7532
All of
AMD EPYC 7502P Firmware<romepi_1.0.0.f
AMD EPYC 7502P
All of
Amd Epyc Server Firmware<romepi_1.0.0.f
AMD EPYC 7502
All of
AMD EPYC 7452 Firmware<romepi_1.0.0.f
AMD EPYC 7452
All of
AMD EPYC 7402P Firmware<romepi_1.0.0.f
AMD EPYC 7402P
All of
Amd Epyc Server Firmware<romepi_1.0.0.f
AMD EPYC 7402
All of
AMD EPYC 7352 firmware<romepi_1.0.0.f
AMD EPYC 7352
All of
AMD EPYC 7302P Firmware<romepi_1.0.0.f
AMD EPYC 7302P
All of
Amd Epyc Server Firmware<romepi_1.0.0.f
AMD EPYC 7302P
All of
AMD EPYC 7282 Firmware<romepi_1.0.0.f
AMD EPYC 7282
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 Server Firmware<milanpi_1.0.0.a
amd epyc 7203
All of
Amd Epyc Server Firmware<milanpi_1.0.0.a
amd epyc 7203p
All of
AMD EPYC 72F3 Firmware<milanpi_1.0.0.a
AMD EPYC 72F3 Firmware
All of
Amd Epyc Server Firmware<milanpi_1.0.0.a
amd epyc 7303
All of
Amd Epyc Server Firmware<milanpi_1.0.0.a
amd epyc 7303p
All of
Amd Epyc Server Firmware<milanpi_1.0.0.a
AMD EPYC 7313P
All of
AMD EPYC 7313P Firmware<milanpi_1.0.0.a
AMD EPYC 7313P
All of
Amd Epyc Server Firmware<milanpi_1.0.0.a
AMD EPYC 7343
All of
AMD EPYC 73F3 Firmware<milanpi_1.0.0.a
AMD EPYC 73F3
All of
AMD EPYC 7373X Firmware<milanpi_1.0.0.a
AMD EPYC 7373X
All of
AMD EPYC 7413 Firmware<milanpi_1.0.0.a
AMD EPYC 7413 Firmware
All of
AMD EPYC 7443 Firmware<milanpi_1.0.0.a
AMD EPYC 7443
All of
AMD EPYC 7443P Firmware<milanpi_1.0.0.a
AMD EPYC 7443P
All of
AMD EPYC 74F3 Firmware<milanpi_1.0.0.a
AMD EPYC 74F3
All of
Amd Epyc Server Firmware<milanpi_1.0.0.a
AMD EPYC 7453
All of
AMD EPYC 7473X Firmware<milanpi_1.0.0.a
AMD EPYC 7473X
All of
AMD EPYC 7513 Firmware<milanpi_1.0.0.a
AMD EPYC 7513
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
All of
AMD EPYC 7573X Firmware<milanpi_1.0.0.a
AMD EPYC 7573X
All of
AMD EPYC 7643 Firmware<milanpi_1.0.0.a
AMD EPYC 7643
All of
AMD EPYC 7773X Firmware<milanpi_1.0.0.a
AMD EPYC 7773X
All of
Amd Epyc Server Firmware<milanpi_1.0.0.a
amd epyc 7643p
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
All of
AMD EPYC 7713P Firmware<milanpi_1.0.0.a
AMD EPYC 7713
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
All of
amd epyc 8024p firmware<genoapi_1.0.0.0
amd epyc 8024p
All of
amd epyc 8124pn firmware<genoapi_1.0.0.0
amd epyc 8124pn
All of
amd epyc 8124p firmware<genoapi_1.0.0.0
amd epyc 8124p
All of
Amd Epyc Server Firmware<genoapi_1.0.0.0
amd epyc 8224pn
All of
amd epyc 8224p firmware<genoapi_1.0.0.0
amd epyc 8224p
All of
amd epyc 8324pn firmware<genoapi_1.0.0.0
amd epyc 8324pn
All of
amd epyc 8324p firmware<genoapi_1.0.0.0
amd epyc 8324p
All of
Amd Epyc Server Firmware<genoapi_1.0.0.0
amd epyc 8434pn
All of
amd epyc 8434p firmware<genoapi_1.0.0.0
amd epyc 8434p
All of
amd epyc 8534pn firmware<genoapi_1.0.0.0
amd epyc 8534pn
All of
amd epyc 8534p firmware<genoapi_1.0.0.0
amd epyc 8534p
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
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
All of
AMD EPYC 9384X Firmware<genoapi_1.0.0.0
AMD EPYC 9384X
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
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
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 9354 Firmware
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
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
All of
AMD EPYC 9554 Firmware<genoapi_1.0.0.0
AMD EPYC 9554
All of
AMD EPYC 9554P Firmware<genoapi_1.0.0.0
AMD EPYC 9554P Firmware
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

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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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