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CVE-2021-40507

CRITICAL

9.8

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.

CVE Details

CVSS v3.1 Score9.8

SeverityCRITICAL

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published4/18/2023

Last Modified2/6/2025

Sourcenvd

Honeypot Sightings0

Affected Products

openrisc:or1200openrisc:or1200_firmware

Weaknesses (CWE)

CWE-287CWE-287

References

https://github.com/openrisc/or1200/commit/2c0765d7ba12813df273cd693a99c4e744f0fbd5(cve@mitre.org)

https://seth.engr.tamu.edu/software-releases/thehuzz/(cve@mitre.org)

https://github.com/openrisc/or1200/commit/2c0765d7ba12813df273cd693a99c4e744f0fbd5(af854a3a-2127-422b-91ae-364da2661108)

https://seth.engr.tamu.edu/software-releases/thehuzz/(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

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