CVE-2026-45203 Imagination Technologies CVE debrief

Who should care

Users of Imaginationtech GPU drivers should verify their systems for potential vulnerabilities, review official advisories, and monitor system logs for suspicious activity. This vulnerability may impact operators, platforms, vulnerability-management teams, and security teams responsible for maintaining system security.

Technical summary

The vulnerability exists in kernel software installed and running inside a Host VM, allowing a malicious driver to modify values in memory after firmware validation but before use. This can trigger a memory write outside the permitted range of memory for the host kernel. The affected software is Imaginationtech GPU drivers, and users should verify their systems for potential vulnerabilities and update GPU drivers to the latest version.

Defensive priority

High priority for users of Imaginationtech GPU drivers

Recommended defensive actions

• Verify system configurations for potential vulnerabilities
• Update GPU drivers to the latest version
• Monitor system logs for suspicious activity
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

Evidence is limited; primary official records indicate a TOCTOU bug in kernel software installed and running inside a Host VM. The vulnerability allows a malicious driver to modify values in memory after firmware validation but before use, potentially triggering a memory write outside the permitted range for the host kernel. Defenders should verify system configurations, review official advisories, and monitor system logs for suspicious activity related to GPU drivers and kernel software.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.