Vulnerability Description
An issue was discovered in the ALU unit of the OR1200 (aka OpenRISC 1200) processor 2011-09-10 through 2015-11-11. The overflow flag is not being updated correctly for the subtract instruction, which results in an incorrect value in the overflow flag. Any software that relies on this flag may experience corruption in execution.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Openrisc | Or1200 Firmware | >= 2011-09-10, <= 2015-11-11 |
| Openrisc | Or1200 | - |
Related Weaknesses (CWE)
References
- https://github.com/openrisc/or1200/commit/2c0765d7ba12813df273cd693a99c4e744f0fbPatch
- https://seth.engr.tamu.edu/software-releases/thehuzz/Third Party Advisory
- https://github.com/openrisc/or1200/commit/2c0765d7ba12813df273cd693a99c4e744f0fbPatch
- https://seth.engr.tamu.edu/software-releases/thehuzz/Third Party Advisory
FAQ
What is CVE-2021-40507?
CVE-2021-40507 is a vulnerability with a CVSS score of 9.8 (CRITICAL). An issue was discovered in the ALU unit of the OR1200 (aka OpenRISC 1200) processor 2011-09-10 through 2015-11-11. The overflow flag is not being updated correctly for the subtract instruction, which ...
How severe is CVE-2021-40507?
CVE-2021-40507 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2021-40507?
Check the references section above for vendor advisories and patch information. Affected products include: Openrisc Or1200 Firmware, Openrisc Or1200.