CVE-2021-26351

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-05-12 · updated 2026-06-17
Weakness: CWE-20

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.

Affected products

AMD Ryzen 3 3100 Firmware: all versions
AMD Ryzen 3 3300G Firmware: all versions
AMD Ryzen 3 3300X Firmware: all versions
AMD Ryzen 3 5125C Firmware: all versions
AMD Ryzen 3 5400U Firmware: all versions
AMD Ryzen 3 5425C Firmware: all versions
AMD Ryzen 3 5425U Firmware: all versions
AMD Ryzen 5 3400G Firmware: all versions
AMD Ryzen 5 3450G Firmware: all versions
AMD Ryzen 5 3600 Firmware: all versions
AMD Ryzen 5 3600X Firmware: all versions
AMD Ryzen 5 5560U Firmware: all versions
AMD Ryzen 5 5600H Firmware: all versions
AMD Ryzen 5 5600Hs Firmware: all versions
AMD Ryzen 5 5600U Firmware: all versions
AMD Ryzen 5 5600X Firmware: all versions
AMD Ryzen 5 5625C Firmware: all versions
AMD Ryzen 5 5625U Firmware: all versions
AMD Ryzen 5 5700G Firmware: all versions
AMD Ryzen 5 5700Ge Firmware: all versions
AMD Ryzen 7 3700X Firmware: all versions
AMD Ryzen 7 3800X Firmware: all versions
AMD Ryzen 7 5800H Firmware: all versions
AMD Ryzen 7 5800Hs Firmware: all versions
AMD Ryzen 7 5800U Firmware: all versions
AMD Ryzen 7 5825C Firmware: all versions
AMD Ryzen 7 5825U Firmware: all versions
AMD Ryzen 9 3900X Firmware: all versions
AMD Ryzen 9 3950X Firmware: all versions
AMD Ryzen 9 5900Hs Firmware: all versions

References

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