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CVE-2026-34194— GPU DDK - UAF read and/or write to arbitrary physical pages in DevmemIntChangeSparse due to incorrect calculation of the virtual index count

Quick assessment

Affected
Imagination Technologies Graphics DDK
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Imagination Graphics DDK是英国Imagination公司的一款GPU驱动工具套件。 Imagination Graphics DDK存在安全漏洞，该漏洞源于软件以非特权用户身份运行时可能进行不当GPU系统调用，导致稀疏内存分配的映射状态管理错误，产品因数学运算在不同大小缓冲区中隐式缩放的方式引用错误内存。

AI Predicted 5.5 Difficulty: Moderate EPSS 0.15% · P3

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 5

VendorProduct Version RangeStatus
Imagination Technologies Graphics DDK 1.18 RTM unaffected
23.2 RTM unaffected
24.2 RTM affected
25.1 RTM≤ 25.3 RTM affected
26.1 RTM affected
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I. Basic Information for CVE-2026-34194

Vulnerability Information
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Vulnerability Title
GPU DDK - UAF read and/or write to arbitrary physical pages in DevmemIntChangeSparse due to incorrect calculation of the virtual index count
Source: CVE Program / CVE List V5
Vulnerability Description
Software installed and run as a non-privileged user may conduct improper GPU system calls to cause mismanagement of a mapping state maintained for a sparse memory allocation. The product accidentally refers to the wrong memory due to the semantics of how math operations are implicitly scaled across buffers of different sizes.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
不正确的指针放大
Source: CVE Program / CVE List V5
Vulnerability Title
Imagination Graphics DDK 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Imagination Graphics DDK是英国Imagination公司的一款GPU驱动工具套件。 Imagination Graphics DDK存在安全漏洞，该漏洞源于软件以非特权用户身份运行时可能进行不当GPU系统调用，导致稀疏内存分配的映射状态管理错误，产品因数学运算在不同大小缓冲区中隐式缩放的方式引用错误内存。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Imagination Technologies Graphics DDK 1.18 RTM -

II. Public POCs for CVE-2026-34194

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III. Intelligence Information for CVE-2026-34194

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News Coverage for CVE-2026-34194 (1)

IV. Related Vulnerabilities

Same product: Graphics DDK
Same vendor: Imagination Technologies
Same weakness: CWE-468

V. Comments for CVE-2026-34194

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