CVE-2021-40507
Last modified
CVE-2021-40507 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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. EPSS estimates a 0.73% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Openrisc | Or1200 Firmware | >= 2011-09-10, <= 2015-11-11 |
References
- https://seth.engr.tamu.edu/software-releases/thehuzz/Third Party Advisory
- https://seth.engr.tamu.edu/software-releases/thehuzz/Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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