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CVE-2026-45201— GPU DDK - Incorrect page size validation in PhysmemNewRamBackedPMR could lead to OOB read and/or write of arbitrary physical memory

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.

以非特权用户身份安装和运行的软件可能会执行不当的 GPU 系统调用，在分配物理页时传入无效的 log2 页大小值，由于对该值的验证不当，可能导致越界（OOB）读和/或写操作。 此类精心构造的 log2 页大小值可能导致 4K 页被误认为是更高阶（higher-order）的页，从而允许对超出 4K 页边界的内存进行读和/或写访问。

AI Predicted 7.8 Difficulty: Moderate EPSS 0.15% · P5

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 6

VendorProduct Version RangeStatus
Imagination Technologies Graphics DDK 1.18 RTM2 unaffected
23.2 RTM2 unaffected
24.2 RTM2 affected
25.1 RTM2≤ 25.3 RTM affected
26.1 RTM1 affected
26.1 RTM2 unaffected
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I. Basic Information for CVE-2026-45201

Vulnerability Information
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Vulnerability Title
GPU DDK - Incorrect page size validation in PhysmemNewRamBackedPMR could lead to OOB read and/or write of arbitrary physical memory
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1284
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Imagination Technologies Graphics DDK 1.18 RTM2 -

II. Public POCs for CVE-2026-45201

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III. Intelligence Information for CVE-2026-45201

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News Coverage for CVE-2026-45201 (1)

Same Patch Batch · Imagination Technologies · 2026-08-21 · 3 CVEs total

CVE-2026-45202 GPU DDK - Silent High-Order CMA Memory Leak & Double Free in `_FreeOSPages_Fast`
CVE-2026-45199 GPU DDK - rgxfw_to_ptr() does not reject FW private data pointers

IV. Related Vulnerabilities

Same product: Graphics DDK
Same vendor: Imagination Technologies
Same weakness: CWE-1284

V. Comments for CVE-2026-45201

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