CVE-2021-26377

Published: Sep 6, 2025Modified: Jun 17, 2026Deferred

4.1

Vector

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

Exploitability: 0.5 / Impact: 3.6

Source: psirt@amd.com (Secondary)

Description

Insufficient parameter validation while allocating process space in the Trusted OS (TOS) may allow for a malicious userspace process to trigger an integer overflow, leading to a potential denial of service.

Related CWEs

CWE-190

Integer Overflow or Wraparound

The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

References (3)

https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-4012.html

Source: psirt@amd.com

https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-5007.html

Source: psirt@amd.com

https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-6018.html

Source: psirt@amd.com

Timeline

No history available yet.