Description
Software installed and run as a non-privileged user may conduct improper GPU system calls to cause OOB read kernel memory access and in certain cases cause GPU UAF of arbitrary pages.



Incorrect validation of array index can lead to OOB read and potentially to GPU UAF of arbitrary pages.
Published: 2026-08-07
Score: 7.1 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

Out‑of‑bounds reads arise from an incorrect validation of array indices in the PMRDevPhysAddrOSMem routine within Imagination Technologies’ Graphics DDK. Because the driver accepts user‑supplied indices beyond the bounds of the allocated array, a kernel pointer is dereferenced, resulting in a kernel memory read. In certain conditions the bug also leads to an uninitialised address in the GPU memory manager (UAF). Consequently, a local non‑privileged user can extract confidential kernel data and potentially exploit the UAF to execute arbitrary code with kernel privileges. This issue is identified as a memory management flaw (CWE‑823).

Affected Systems

The affected software is the Imagination Technologies Graphics DDK used for GPU management. No specific version range is reported in the CVE data, so all builds of this DDK that include the PMRDevPhysAddrOSMem routine may be vulnerable unless they have been updated after the vendor issued a patch.

Risk and Exploitability

Exploitability is high because the vulnerability can be triggered by any user who has the ability to execute GPU system calls with the driver. The likely attack vector is a local, non‑privileged user sending malformed commands to the GPU. The EPSS score of 0.00139 indicates a very low likelihood of exploitation, but the issue is still not cataloged in CISA KEV. The CVSS score is 7.1, indicating medium to high severity.

Generated by OpenCVE AI on August 7, 2026 at 19:53 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Update the Graphics DDK to the latest revision that addresses the array index validation flaw.
  • Restrict GPU system call privileges for non‑privileged users by applying kernel access control or disabling GPU functionality for those accounts.
  • Continuously monitor kernel logs for unusual GPU access patterns and enforce crash‑dump analysis to detect attempts to exploit the OOB read or UAF.

Generated by OpenCVE AI on August 7, 2026 at 19:53 UTC.

Tracking

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Advisories

No advisories yet.

History

Fri, 07 Aug 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.1, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H'}

ssvc

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


Fri, 07 Aug 2026 09:15:00 +0000

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

Fri, 07 Aug 2026 02:30:00 +0000

Type Values Removed Values Added
Description Software installed and run as a non-privileged user may conduct improper GPU system calls to cause OOB read kernel memory access and in certain cases cause GPU UAF of arbitrary pages. Incorrect validation of array index can lead to OOB read and potentially to GPU UAF of arbitrary pages.
Title GPU DDK - Dimension Mismatch and Integer Truncation in PMRDevPhysAddrOSMem
Weaknesses CWE-823
References

Subscriptions

Imaginationtech Graphics Ddk
cve-icon MITRE

Status: PUBLISHED

Assigner: imaginationtech

Published:

Updated: 2026-08-07T17:53:00.194Z

Reserved: 2026-06-01T11:03:13.032Z

Link: CVE-2026-49746

cve-icon Vulnrichment

Updated: 2026-08-07T17:52:55.519Z

cve-icon NVD

Status : Received

Published: 2026-08-07T03:16:20.057

Modified: 2026-08-07T18:17:18.670

Link: CVE-2026-49746

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-07T20:00:05Z

Weaknesses
  • CWE-823

    Use of Out-of-range Pointer Offset