CVE-2026-45203 Details
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.
A vulnerability exists in the GPU driver component of Imagination Technologies that allows for out-of-bounds memory writes. This issue arises from a time-of-check-to-time-of-use (TOCTOU) flaw, where a malicious driver can alter memory values after they have been validated by the firmware but before they are actually used. The vulnerability is present in the GPU Device Driver Kit (DDK) releases up to and including 26.1 RTM1.
The DDK firmware component has been updated to include protections that prevent the out-of-bounds write from occurring. Users should ensure they are using a version of the GPU driver that includes this update.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jul 13, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://www.imaginationtech.com/gpu-driver-vulnerabilities/ | imaginationtech | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-367 | Time-of-check Time-of-use (TOCTOU) Race Condition | imaginationtech |
Affected Products
| Product | Versions |
|---|---|
| imaginationtech ddk | < 26.1 26.1 rtm1 |
CPE
Remediation
| |
| google android | All versions |
CPE
Remediation
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| linux linux kernel | All versions |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Aug 12, 2026 | Initial Analysis | [email protected] |
| Jul 13, 2026 | CVE Modified | CISA-ADP |
| Jul 10, 2026 | New CVE Received | imaginationtech |