CVEvulnerability

CVE-2021-40507

9.8 CRITICAL Published 2023-04-18 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2023-04-18
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-287

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.

Affected configurations

• openrisc or1200 firmware (>= 2011-09-10 <= 2015-11-11)

Related

Weakness · CWE (1)

  • CWE-287 Improper Authentication weakness

References