Description
Software installed and run as a non-privileged user may conduct improper GPU system calls to pass invalid log2 page size when allocating physical pages leading to OOB read and/or write due to improper validation of the said value.



Such crafted log2 page size could lead to 4K pages being treated as higher order pages and allowing read and/or write access to the memory beyond 4K threshold.
Published: 2026-08-21
Score: 7.8 High
EPSS: < 1% Very Low
KEV: No
Impact: Out-of-bounds physical memory read/write
Action: Update Driver
AI Analysis

Impact

The vulnerability arises from incorrect validation of the log2 page size requested when allocating physical pages in the GPU DDK. A non-privileged user can trigger the allocation with a value that causes 4‑KiB pages to be treated as larger pages, resulting in an out‑of‑bounds read and/or write of arbitrary physical memory. This flaw is enumerated as CWE‑1284 and allows a local attacker to read or modify memory beyond the intended bounds, potentially leading to privilege escalation or system compromise.

Affected Systems

Imagination Technologies Graphics DDK. The CVE does not list specific versions; all releases of the Graphics DDK are potentially impacted.

Risk and Exploitability

The flaw is local and requires the ability to perform GPU system calls as a non‑privileged user. No public exploit is documented and the EPSS score is < 1%, making the likelihood of exploitation uncertain. However, because an attacker can exercise arbitrary physical memory access, the potential impact remains significant if the vulnerability is exploited. The CVSS score is 7.8, indicating a high impact severity.

Generated by OpenCVE AI on August 28, 2026 at 19:16 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Update the Graphics DDK to the latest release from Imagination Technologies that addresses the log2 page size validation flaw.
  • Restrict non‑privileged user access to the GPU driver by configuring resource limits or sandboxing options, preventing them from issuing the vulnerable system calls.
  • Implement monitoring of GPU driver activity and anomalous memory access patterns to detect potential exploitation attempts.

Generated by OpenCVE AI on August 28, 2026 at 19:16 UTC.

Tracking

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Advisories

No advisories yet.

History

Thu, 27 Aug 2026 18:00:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Fri, 21 Aug 2026 13:30:00 +0000

Type Values Removed Values Added
First Time appeared Imaginationtech
Imaginationtech graphics Ddk
Vendors & Products Imaginationtech
Imaginationtech graphics Ddk

Fri, 21 Aug 2026 04:15:00 +0000

Type Values Removed Values Added
Description Software installed and run as a non-privileged user may conduct improper GPU system calls to pass invalid log2 page size when allocating physical pages leading to OOB read and/or write due to improper validation of the said value. Such crafted log2 page size could lead to 4K pages being treated as higher order pages and allowing read and/or write access to the memory beyond 4K threshold.
Title GPU DDK - Incorrect page size validation in PhysmemNewRamBackedPMR could lead to OOB read and/or write of arbitrary physical memory
Weaknesses CWE-1284
References

Subscriptions

Imaginationtech Graphics Ddk
cve-icon MITRE

Status: PUBLISHED

Assigner: imaginationtech

Published:

Updated: 2026-08-27T17:49:05.654Z

Reserved: 2026-05-11T10:58:04.162Z

Link: CVE-2026-45201

cve-icon Vulnrichment

Updated: 2026-08-27T17:48:26.382Z

cve-icon NVD

Status : Deferred

Published: 2026-08-21T04:18:02.790

Modified: 2026-09-03T17:11:18.230

Link: CVE-2026-45201

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-28T19:30:16Z

Weaknesses
  • CWE-1284

    Improper Validation of Specified Quantity in Input