Graphics Ddk CVE-2026-22163

Requires low-privilege local user access to misuse DDK kernel module IOCTL interface through malware code. Attacker exploits race condition in GPU memory access synchronization to write arbitrary physical memory. No victim interaction needed.

While a CVSS score is not assigned, the vulnerability carries significant real-world risk for systems running the affected Graphics DDK. The attack vector requires local access with the ability to execute malicious code (likely requiring kernel-level execution or ring-0 context), which moderately constrains the threat landscape but remains critical for systems where kernel code execution is possible. The CWE-820 classification indicates a well-understood class of vulnerability that, combined with GPU memory access primitives, has historically been demonstrated in proof-of-concept exploits. The lack of published EPSS or KEV status does not diminish risk; rather, it suggests this may be a recently disclosed or vendor-coordinated vulnerability. The technical impact is severe: arbitrary physical memory writes enable privilege escalation, memory disclosure, code injection, and complete system takeover. Organizations running Graphics DDK should treat this as a high-priority issue regardless of CVSS score absence, particularly in systems where kernel attack surface matters (HPC, data centers, gaming infrastructure, automotive systems).

An attacker with the ability to execute kernel-mode malware (obtained through a separate kernel vulnerability, rootkit, or privileged compromise) crafts malicious IOCTL requests to the Graphics DDK kernel module. By sending concurrent or specially-timed IOCTL commands that exploit the race condition in the unsynchronized shared resource, the attacker manipulates the GPU's memory write operations to overwrite kernel data structures, page tables, or security-critical memory regions. This results in privilege escalation, disabling security mechanisms, or achieving arbitrary code execution with the highest system privilege level. No public proof-of-concept is currently identified, but the technical simplicity of GPU-based memory write primitives and the clarity of the CWE-820 root cause suggest that exploitation is straightforward once the vulnerable code path is identified.