CVE-2026-45203
GPU DDK - rgxfw_hwperf_ufo() re-reads psCmdHeader->ui32CmdSize after initial check, TOCTOU
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.
INFO
Published Date :
July 10, 2026, 9:16 p.m.
Last Modified :
July 10, 2026, 9:16 p.m.
Remotely Exploit :
No
Source :
367425dc-4d06-4041-9650-c2dc6aaa27ce
Affected Products
The following products are affected by CVE-2026-45203
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Update GPU firmware to the latest version.
- Apply host kernel updates from the vendor.
- Ensure firmware validation precedes memory use.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-45203.
| URL | Resource |
|---|---|
| https://www.imaginationtech.com/gpu-driver-vulnerabilities/ |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-45203 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-45203
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-45203 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-45203 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by 367425dc-4d06-4041-9650-c2dc6aaa27ce
Jul. 10, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Imagination Technologies', 'product': 'Graphics DDK', 'versions': [{'status': 'affected', 'version': '1.18 RTM2', 'versionType': 'custom'}, {'status': 'affected', 'version': '23.2 RTM2', 'versionType': 'custom'}, {'status': 'affected', 'version': '24.2 RTM2', 'versionType': 'custom'}, {'status': 'affected', 'version': '25.1 RTM2', 'versionType': 'custom', 'lessThanOrEqual': '25.3 RTM'}, {'status': 'affected', 'version': '26.1 RTM1', 'versionType': 'custom'}, {'status': 'unaffected', 'version': '26.1 RTM2', 'versionType': 'custom'}], 'platforms': ['Linux', 'Android'], 'defaultStatus': 'unknown'}] Added 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. Added CWE CWE-367 Added Reference https://www.imaginationtech.com/gpu-driver-vulnerabilities/