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TI-2021-18334 Aliases CVE-2021-41612GHSA-qfvq-jc5r-mvjw

An issue was discovered in the ALU unit of the OpenRISC mor1kx processor.

Priority MEDIUM 42Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.

Summary

An issue was discovered in the ALU unit of the OpenRISC mor1kx processor. The carry flag is not being updated correctly for the subtract instruction, which results in an incorrect value of the carry flag. Any software that relies on this flag may experience corruption in execution.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01146 66th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:openrisc:mor1kx_firmware:*:*:*:*:*:*:*:*before 5.1VulnerableOpenrisc
cpe:2.3:h:openrisc:mor1kx:-:*:*:*:*:*:*:*not specified by NVDRunning onOpenrisc
  • cpe:2.3:o:openrisc:mor1kx_firmware:*:*:*:*:*:*:*:* Versions before 5.1 Vulnerable ·Openrisc
  • cpe:2.3:h:openrisc:mor1kx:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Openrisc

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-41612
  2. 2026-10-03 Alias added: GHSA-qfvq-jc5r-mvjw

References

Exploit 1

Other 1

  • TI-2021-18336 An issue was discovered in the controller unit of the OpenRISC mor1kx processor. CVSS 3.1HIGH 7.8
  • TI-2021-18335 An issue was discovered in the controller unit of the OpenRISC mor1kx processor. CVSS 3.1MEDIUM 4.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences