What’s Vulnerable › Vulnerabilities

CVE-2021-41613

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-04-18 · updated 2026-06-17

Description

An issue was discovered in the controller unit of the OpenRISC mor1kx processor. The write logic of Exception Effective Address Register (EEAR) is not implemented correctly. User programs from authorized privilege levels will be unable to write to EEAR.

Affected products

• Openrisc Mor1Kx Firmware: before 5.1 — fixed in 5.1

How to fix

Upgrade to a fixed version: Openrisc Mor1Kx Firmware 5.1. Check the vendor advisory for mitigations.

References

• https://github.com/openrisc/mor1kx/issues/141
• https://seth.engr.tamu.edu/software-releases/thehuzz/
• https://github.com/openrisc/mor1kx/issues/141
• https://seth.engr.tamu.edu/software-releases/thehuzz/

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