Skip to content
Fencer Vulns
medium 6.7

CVE-2021-46774 json

Insufficient DRAM address validation in System Management Unit (SMU) may allow an attacker to read/write from/to an invalid DRAM address, p…

published 2023-11-14 2 y ago modified 2026-06-17 4 mo ago also EUVD-2021-33430

cvss
6.7
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 43%
public exploits
0
none known

Summary

Insufficient DRAM address validation in System Management Unit (SMU) may allow an attacker to read/write from/to an invalid DRAM address, potentially resulting in denial-of-service.

Patch / fix

  • amd epyc_7001_firmware naplespi_1.0.0.k
  • amd epyc_7251_firmware naplespi_1.0.0.k
  • amd epyc_7261_firmware naplespi_1.0.0.k
  • amd epyc_7281_firmware naplespi_1.0.0.k
  • amd epyc_7301_firmware naplespi_1.0.0.k
  • amd epyc_7351_firmware naplespi_1.0.0.k
  • amd epyc_7351p_firmware naplespi_1.0.0.k
  • amd epyc_7371_firmware naplespi_1.0.0.k
  • amd epyc_7401_firmware naplespi_1.0.0.k
  • amd epyc_7401p_firmware naplespi_1.0.0.k
  • amd epyc_7451_firmware naplespi_1.0.0.k
  • amd epyc_7501_firmware naplespi_1.0.0.k
  • amd epyc_7551_firmware naplespi_1.0.0.k
  • amd epyc_7551p_firmware naplespi_1.0.0.k
  • amd epyc_7601_firmware naplespi_1.0.0.k
  • amd epyc_7232p_firmware romepi_1.0.0.g
  • amd epyc_7252_firmware romepi_1.0.0.g
  • amd epyc_7262_firmware romepi_1.0.0.g
  • amd epyc_7272_firmware romepi_1.0.0.g
  • amd epyc_7282_firmware romepi_1.0.0.g
  • kernel-firmware SLE Module for Basesystem 15 SP5, SLE Micro 5.5, openSUSE Leap 15.5 20230724-150500.3.9.1
  • kernel-firmware SLE Module for Basesystem 15 SP4, SLE Micro 5.4, SLE Micro 5.3 +3 more 20220509-150400.4.25.1
  • kernel-firmware SLES for SAP 12 SP5, SLES 12 SP5 20190618-5.34.1
  • kernel-firmware SLES for SAP 15 SP3, SLES 15 SP3-LTSS, SLE Micro 5.2 +4 more 20210208-150300.4.19.1
  • kernel-firmware SLES for SAP 15 SP2, SLES for SAP 15 SP1, SLES 15 SP2-LTSS +3 more 20200107-150100.3.40.1

suse advisories SUSE-SU-2024:2376-1SUSE-SU-2023:4665-1SUSE-SU-2023:4664-1SUSE-SU-2023:4660-1SUSE-SU-2023:4655-1SUSE-SU-2023:4654-1

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.51% chance of exploitation in the next 30 days, higher than 43% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 6.7 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:H/A:L
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

  • AMD Ryzen™ 3000 series Desktop Processors “Matisse"
  • AMD AMD Ryzen™ 5000 Series Desktop Processors “Vermeer”
  • AMD AMD Ryzen™ Threadripper™ 3000 Series Processors “Castle Peak” HEDT
  • AMD AMD Ryzen™ Threadripper™ PRO Processors “Castle Peak” WS SP3
  • AMD AMD Ryzen™ Threadripper™ PRO 3000WX Series Processors “Chagall” WS
  • AMD 1st Gen AMD EPYC™ Processors
  • AMD 2nd Gen AMD EPYC™ Processors
  • AMD 3rd Gen AMD EPYC™ Processors
  • AMD 4th Gen AMD EPYC™ Processors
  • AMD AMD EPYC™ Embedded 3000
  • AMD AMD EPYC™ Embedded 7002
  • AMD AMD EPYC™ Embedded 7003
  • AMD AMD Ryzen™ Embedded 5000

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.