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HIGH · 7.8

CVE-2026-45203

Kernel software installed and running inside a Host VM may post improper commands to the GPU Firmware to trigger a memory write outside the permitted range of memory for the host kernel. A TOCTOU b...

Vulnerability Description

Kernel software installed and running inside a Host VM may post improper commands to the GPU Firmware to trigger a memory write outside the permitted range of memory for the host kernel. A TOCTOU bug existed where a malicious driver could modify values in memory after firmware validation but before use.

CVSS Score

7.8

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

Affected Products

VendorProductVersions
ImaginationtechDdk< 26.1
GoogleAndroid-
LinuxLinux Kernel-

Related Weaknesses (CWE)

CWE-367

References

FAQ

What is CVE-2026-45203?

CVE-2026-45203 is a vulnerability with a CVSS score of 7.8 (HIGH). Kernel software installed and running inside a Host VM may post improper commands to the GPU Firmware to trigger a memory write outside the permitted range of memory for the host kernel. A TOCTOU b...

How severe is CVE-2026-45203?

CVE-2026-45203 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-45203?

Check the references section above for vendor advisories and patch information. Affected products include: Imaginationtech Ddk, Google Android, Linux Linux Kernel.