AMD MxGPU-Virtualization Driver Heap-Based Buffer Overflow Vulnerability Allowing Denial-of-Service

A race condition has been identified in the MxGPU-Virtualization driver's ioctl path. This issue arises from concurrent, unsynchronized access to the global variable amdgv_cmd within an unlocked ioctl handler. An attacker could exploit this vulnerability to induce a heap-based buffer overflow, potentially leading to a denial-of-service condition within the affected system context.

Impact

Exploitation of this vulnerability can cause a heap-based buffer overflow, leading to a denial-of-service condition in the vulnerable system context.

Remediation

Users are advised to update to GIM Driver version 8.4, which will be released on September 16, 2025.