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
Possible ATT&CK Techniques 1AI
T1203 · Exploitation for Client ExecutionAffected Version Matrix 5
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| 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: NVD (National Vulnerability Database)
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: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
不正确的指针放大
Source: NVD (National Vulnerability Database)
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
| # | POC Description | Source Link | Shenlong Link |
|---|
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News Coverage for CVE-2026-34194 (1)
IV. Related Vulnerabilities
Same product: Graphics DDK
- CVE-2026-41158
GPU DDK - Backed sparse PMRs are not handled by deferred fre - CVE-2026-41157
GPU DDK - OOB Write in CalculateNPOTTwiddleSparsePageMap3D - CVE-2026-41155
GPU DDK - SharedSecMem mapped into all GPU virtual address s - CVE-2026-34195
GPU DDK - Kernel heap OOB write in PMRChangeSparseMemOSMem d - CVE-2026-22164
GPU DDK - Kernel heap OOB write in DevmemIntComputeVirtualIn
Same vendor: Imagination Technologies
- CVE-2026-41158
GPU DDK - Backed sparse PMRs are not handled by deferred fre - CVE-2026-41157
GPU DDK - OOB Write in CalculateNPOTTwiddleSparsePageMap3D - CVE-2026-41155
GPU DDK - SharedSecMem mapped into all GPU virtual address s - CVE-2026-34195
GPU DDK - Kernel heap OOB write in PMRChangeSparseMemOSMem d - CVE-2026-22164
GPU DDK - Kernel heap OOB write in DevmemIntComputeVirtualIn
V. Comments for CVE-2026-34194
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