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MEDIUM · 5.5

CVE-2021-26337

Insufficient DRAM address validation in System Management Unit (SMU) may result in a DMA read from invalid DRAM address to SRAM resulting in SMU not servicing further requests.

Vulnerability Description

Insufficient DRAM address validation in System Management Unit (SMU) may result in a DMA read from invalid DRAM address to SRAM resulting in SMU not servicing further requests.

CVSS Score

5.5

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE

Affected Products

VendorProductVersions
AmdEpyc 7003 Firmware< milanpi-sp3_1.0.0.4
AmdEpyc 7003-
AmdEpyc 7002 Firmware< romepi-sp3_1.0.0.c
AmdEpyc 7002-
AmdEpyc 72F3 Firmware< milanpi-sp3_1.0.0.4
AmdEpyc 72F3-
AmdEpyc 7313 Firmware< milanpi-sp3_1.0.0.4
AmdEpyc 7313-
AmdEpyc 7313P Firmware< milanpi-sp3_1.0.0.4
AmdEpyc 7313P-
AmdEpyc 7343 Firmware< milanpi-sp3_1.0.0.4
AmdEpyc 7343-
AmdEpyc 73F3 Firmware< milanpi-sp3_1.0.0.4
AmdEpyc 73F3-
AmdEpyc 7413 Firmware< milanpi-sp3_1.0.0.4
AmdEpyc 7413-
AmdEpyc 7443 Firmware< milanpi-sp3_1.0.0.4
AmdEpyc 7443-
AmdEpyc 7443P Firmware< milanpi-sp3_1.0.0.4
AmdEpyc 7443P-

References

FAQ

What is CVE-2021-26337?

CVE-2021-26337 is a vulnerability with a CVSS score of 5.5 (MEDIUM). Insufficient DRAM address validation in System Management Unit (SMU) may result in a DMA read from invalid DRAM address to SRAM resulting in SMU not servicing further requests.

How severe is CVE-2021-26337?

CVE-2021-26337 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-26337?

Check the references section above for vendor advisories and patch information. Affected products include: Amd Epyc 7003 Firmware, Amd Epyc 7003, Amd Epyc 7002 Firmware, Amd Epyc 7002, Amd Epyc 72F3 Firmware.