CVE-2021-40507
Critical
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.
SeverityCritical
CVSS9.8
Exploit probability—
ProductOpenrisc Or1200 Firmware
PublishedApr 18, 2023
First seenApr 18, 2023
Weakness typeCWE-287Improper authentication
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| openrisc or1200_firmware | 2011-09-10 ≤ v ≤ 2015-11-11 | — |
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