Vulnerability details
CVE-2026-45203
Imagination Technologies Graphics DDK
GPU DDK - rgxfw_hwperf_ufo() re-reads psCmdHeader->ui32CmdSize after initial check, TOCTOU
CVSS 3.1
7.8High
Official 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 scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.8High | 3.1 | CISA ADP / Vulnrichment (CISA-ADP) | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Imagination Technologies | Graphics DDK | 1.18 RTM2 | CVEProject cvelistV5 (CNA) |
| Imagination Technologies | Graphics DDK | 23.2 RTM2 | CVEProject cvelistV5 (CNA) |
| Imagination Technologies | Graphics DDK | 24.2 RTM2 | CVEProject cvelistV5 (CNA) |
| Imagination Technologies | Graphics DDK | 26.1 RTM1 | CVEProject cvelistV5 (CNA) |
| Imagination Technologies | Graphics DDK | 25.1 RTM2 ≤ v ≤ 25.3 RTM | CVEProject cvelistV5 (CNA) |
References and advisories
1
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Details
- Published
- 2026-07-11
- Last updated
- 2026-07-13
- State
- Published
- Assigner (CNA)
- imaginationtech
Exploit prediction (EPSS)
0.12%
Probability of exploitation in 30 days
2.1%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-367CWE - CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition (4.20)