CVE-2021-26336: Buffer Overflow

Published Nov 16, 2021
·
Updated

Insufficient bounds checking in System Management Unit (SMU) may cause invalid memory accesses/updates that could result in SMU hang and subsequent failure to service any further requests from other components.

Affected Software

190 affected components
AMD Epyc 7003 Firmware<milanpi-sp3_1.0.0.4
AMD Epyc 7003
AMD Epyc 7002 Firmware<romepi-sp3_1.0.0.c
AMD Epyc 7002
AMD Epyc 72f3 Firmware<milanpi-sp3_1.0.0.4
AMD Epyc 72f3
AMD Epyc 7313 Firmware<milanpi-sp3_1.0.0.4
AMD Epyc 7313
AMD Epyc 7313p Firmware<milanpi-sp3_1.0.0.4
AMD Epyc 7313p
AMD Epyc 7343 Firmware<milanpi-sp3_1.0.0.4
AMD Epyc 7343
AMD Epyc 73f3 Firmware<milanpi-sp3_1.0.0.4
AMD Epyc 73f3
AMD Epyc 7413 Firmware<milanpi-sp3_1.0.0.4
AMD Epyc 7413
AMD Epyc 7443 Firmware<milanpi-sp3_1.0.0.4
AMD Epyc 7443
AMD Epyc 7443p Firmware<milanpi-sp3_1.0.0.4
AMD Epyc 7443p
AMD Epyc 7453 Firmware<milanpi-sp3_1.0.0.4
AMD Epyc 7453
AMD Epyc 74f3 Firmware<milanpi-sp3_1.0.0.4
AMD Epyc 74f3
AMD Epyc 7513 Firmware<milanpi-sp3_1.0.0.4
AMD Epyc 7513
AMD Epyc 7543 Firmware<milanpi-sp3_1.0.0.4
AMD Epyc 7543
AMD Epyc 7543p Firmware<milanpi-sp3_1.0.0.4
AMD Epyc 7543p
AMD Epyc 75f3 Firmware<milanpi-sp3_1.0.0.4
AMD Epyc 75f3
AMD Epyc 7643 Firmware<milanpi-sp3_1.0.0.4
AMD Epyc 7643
AMD Epyc 7663 Firmware<milanpi-sp3_1.0.0.4
AMD Epyc 7663
AMD Epyc 7713 Firmware<milanpi-sp3_1.0.0.4
AMD Epyc 7713
AMD Epyc 7713p Firmware<milanpi-sp3_1.0.0.4
AMD Epyc 7713p
AMD Epyc 7763 Firmware<milanpi-sp3_1.0.0.4
AMD Epyc 7763
AMD Epyc 7232p Firmware<romepi-sp3_1.0.0.c
AMD Epyc 7232p
AMD Epyc 7252 Firmware<romepi-sp3_1.0.0.c
AMD Epyc 7252
AMD Epyc 7262 Firmware<romepi-sp3_1.0.0.c
AMD Epyc 7262
AMD Epyc 7272 Firmware<romepi-sp3_1.0.0.c
AMD Epyc 7272
AMD Epyc 7282 Firmware<romepi-sp3_1.0.0.c
AMD Epyc 7282
AMD Epyc 7302 Firmware<romepi-sp3_1.0.0.c
AMD Epyc 7302
AMD Epyc 7302p Firmware<romepi-sp3_1.0.0.c
AMD Epyc 7302p
AMD Epyc 7352 Firmware<romepi-sp3_1.0.0.c
AMD Epyc 7352
AMD Epyc 7402 Firmware<romepi-sp3_1.0.0.c
AMD Epyc 7402
AMD Epyc 7402p Firmware<romepi-sp3_1.0.0.c
AMD Epyc 7402p
AMD Epyc 7452 Firmware<romepi-sp3_1.0.0.c
AMD Epyc 7452
AMD Epyc 7502 Firmware<romepi-sp3_1.0.0.c
AMD Epyc 7502
AMD Epyc 7502p Firmware<romepi-sp3_1.0.0.c
AMD Epyc 7502p
AMD Epyc 7532 Firmware<romepi-sp3_1.0.0.c
AMD Epyc 7532
AMD Epyc 7542 Firmware<romepi-sp3_1.0.0.c
AMD Epyc 7542
AMD Epyc 7552 Firmware<romepi-sp3_1.0.0.c
AMD Epyc 7552
AMD Epyc 7642 Firmware<romepi-sp3_1.0.0.c
AMD Epyc 7642
AMD Epyc 7662 Firmware<romepi-sp3_1.0.0.c
AMD Epyc 7662
AMD Epyc 7702 Firmware<romepi-sp3_1.0.0.c
AMD Epyc 7702
AMD Epyc 7702p Firmware<romepi-sp3_1.0.0.c
AMD Epyc 7702p
AMD Epyc 7742 Firmware<romepi-sp3_1.0.0.c
AMD Epyc 7742
AMD Epyc 7f32 Firmware<romepi-sp3_1.0.0.c
AMD Epyc 7f32
AMD Epyc 7f52 Firmware<romepi-sp3_1.0.0.c
AMD Epyc 7f52
AMD Ryzen 3 3100 Firmware
AMD Ryzen 3 3100
AMD Ryzen 3 3300g Firmware
AMD Ryzen 3 3300g
AMD Ryzen 5 3400g Firmware
AMD Ryzen 5 3400g
AMD Ryzen 3 5125c Firmware
AMD Ryzen 3 5125c
AMD Ryzen 3 5400u Firmware
AMD Ryzen 3 5400u
AMD Ryzen 3 5425c Firmware
AMD Ryzen 3 5425c
AMD Ryzen 7 5800h Firmware
AMD Ryzen 7 5800h
AMD Ryzen 7 5800hs Firmware
AMD Ryzen 7 5800hs
AMD Ryzen 7 5800u Firmware
AMD Ryzen 7 5800u
AMD Ryzen 7 5825c Firmware
AMD Ryzen 7 5825c
AMD Ryzen 7 5825u Firmware
AMD Ryzen 7 5825u
AMD Ryzen 9 5900hs Firmware
AMD Ryzen 9 5900hs
AMD Ryzen 9 5900hx Firmware
AMD Ryzen 9 5900hx
AMD Ryzen 9 5980hs Firmware
AMD Ryzen 9 5980hs
AMD Ryzen 9 5980hx Firmware
AMD Ryzen 9 5980hx
AMD Ryzen 3 5425u Firmware
AMD Ryzen 3 5425u
AMD Ryzen 7 3800x Firmware
AMD Ryzen 7 3800x
AMD Ryzen 5 3450g Firmware
AMD Ryzen 5 3450g
AMD Ryzen 5 3600 Firmware
AMD Ryzen 5 3600
AMD Ryzen 5 5560u Firmware
AMD Ryzen 5 5560u
AMD Ryzen Threadripper 1900x Firmware
AMD Ryzen Threadripper 1900x
AMD Ryzen Threadripper 1920x Firmware
AMD Ryzen Threadripper 1920x
AMD Ryzen Threadripper 1950x Firmware
AMD Ryzen Threadripper 1950x
AMD Ryzen Threadripper 2920x Firmware
AMD Ryzen Threadripper 2920x
AMD Ryzen Threadripper 2950x Firmware
AMD Ryzen Threadripper 2950x
AMD Ryzen Threadripper 2970wx Firmware
AMD Ryzen Threadripper 2970wx
AMD Ryzen Threadripper 2990wx Firmware
AMD Ryzen Threadripper 2990wx
AMD Ryzen Threadripper 3960x Firmware
AMD Ryzen Threadripper 3960x
AMD Ryzen Threadripper 3970x Firmware
AMD Ryzen Threadripper 3970x
AMD Ryzen Threadripper 3990x Firmware
AMD Ryzen Threadripper 3990x
AMD Ryzen Threadripper Pro 3945wx Firmware
AMD Ryzen Threadripper Pro 3945wx
AMD Ryzen Threadripper Pro 3955wx Firmware
AMD Ryzen Threadripper Pro 3955wx
AMD Ryzen Threadripper Pro 3975wx Firmware
AMD Ryzen Threadripper Pro 3975wx
AMD Ryzen Threadripper Pro 3995wx Firmware
AMD Ryzen Threadripper Pro 3995wx
AMD Ryzen Threadripper Pro 5945wx Firmware
AMD Ryzen Threadripper Pro 5945wx
AMD Ryzen Threadripper Pro 5955wx Firmware
AMD Ryzen Threadripper Pro 5955wx
AMD Ryzen Threadripper Pro 5965wx Firmware
AMD Ryzen Threadripper Pro 5965wx
AMD Ryzen Threadripper Pro 5975wx Firmware
AMD Ryzen Threadripper Pro 5975wx
AMD Ryzen Threadripper Pro 5995wx Firmware
AMD Ryzen Threadripper Pro 5995wx
AMD Ryzen 5 5600h Firmware
AMD Ryzen 5 5600h
AMD Ryzen 5 5600hs Firmware
AMD Ryzen 5 5600hs
AMD Ryzen 5 5600u Firmware
AMD Ryzen 5 5600u
AMD Ryzen 5 5600x Firmware
AMD Ryzen 5 5600x
AMD Ryzen 5 5625c Firmware
AMD Ryzen 5 5625c
AMD Ryzen 5 5625u Firmware
AMD Ryzen 5 5625u
AMD Ryzen 5 5700g Firmware
AMD Ryzen 5 5700g
AMD Ryzen 5 5700ge Firmware
AMD Ryzen 5 5700ge
AMD Ryzen 5 3600x Firmware
AMD Ryzen 5 3600x
AMD Ryzen 9 3900x Firmware
AMD Ryzen 9 3900x
AMD Ryzen 9 3950x Firmware
AMD Ryzen 9 3950x
AMD Ryzen 3 3300x Firmware
AMD Ryzen 3 3300x

Event History

Nov 16, 2021
CVE Published
via MITRE·06:04 PM
Data Sourced
via MITRE·06:04 PM
DescriptionWeakness
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Frequently Asked Questions

1

What is the severity of CVE-2021-26336?

CVE-2021-26336 has been identified with a high severity due to the potential for invalid memory accesses and service disruption.

2

How do I fix CVE-2021-26336?

To fix CVE-2021-26336, update the firmware of affected AMD EPYC processors to the latest version that addresses this vulnerability.

3

Which AMD products are affected by CVE-2021-26336?

CVE-2021-26336 affects various AMD EPYC 7003 and 7002 series firmware versions prior to milanpi-sp3_1.0.0.4 and romepi-sp3_1.0.0.c respectively.

4

What are the consequences of not addressing CVE-2021-26336?

Failure to address CVE-2021-26336 may result in system hangs and the inability of the System Management Unit to service further requests from other components.

5

When was CVE-2021-26336 published?

CVE-2021-26336 was published on March 2, 2021.

Company

Resources

Contact

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