CVE-2021-40507

2023-04-1800:00:00

mitre

www.cve.org

alu unit

overflow flag

or1200 processor

software corruption

execution

AI Score

Confidence

High

EPSS

0.005

Percentile

75.8%

JSON

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.