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Medium severity · published May 12, 2022
CVE-2021-26351
Insufficient DRAM address validation in System Management Unit (SMU) may result in a DMA (Direct Memory Access) read/write from/to invalid DRAM address that could result in denial…
5.5
CVSS
0.2%
EPSS
No
On KEV
Description
Insufficient DRAM address validation in System Management Unit (SMU) may result in a DMA (Direct Memory Access) read/write from/to invalid DRAM address that could result in denial of service.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 11% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
R3
Ryzen 3 3100 Firmware · Amd
All versions, or not specified · source: NVD
R3
Ryzen 3 3300g Firmware · Amd
All versions, or not specified · source: NVD
R3
Ryzen 3 3300x Firmware · Amd
All versions, or not specified · source: NVD
R3
Ryzen 3 5125c Firmware · Amd
All versions, or not specified · source: NVD
R3
Ryzen 3 5400u Firmware · Amd
All versions, or not specified · source: NVD
R3
Ryzen 3 5425c Firmware · Amd
All versions, or not specified · source: NVD
R3
Ryzen 3 5425u Firmware · Amd
All versions, or not specified · source: NVD
R5
Ryzen 5 3400g Firmware · Amd
All versions, or not specified · source: NVD
R5
Ryzen 5 3450g Firmware · Amd
All versions, or not specified · source: NVD
R5
Ryzen 5 3600 Firmware · Amd
All versions, or not specified · source: NVD
R5
Ryzen 5 3600x Firmware · Amd
All versions, or not specified · source: NVD
R5
Ryzen 5 5560u Firmware · Amd
All versions, or not specified · source: NVD
Affected product
R3
Ryzen 3 3100 Firmware
Amd
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-26351
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-26351
Vendor Advisory
https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1027
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