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CVE-2026-74915— GPU DDK - OOB write in UntwiddlePOTSquare64bpp

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.

包含异常 WebGPU 内容的网页，若被加载至 GPU GLES 渲染进程中，可能触发 GPU GLES 用户态共享库中的越界读取和/或越界写入崩溃。在某些平台上，若执行图形工作负载的进程拥有系统权限，该漏洞可能进一步被利用，从而在设备上实施更深层的攻击。

AI Predicted 8.8 Difficulty: Moderate
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I. Basic Information for CVE-2026-74915

Vulnerability Information
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Vulnerability Title
GPU DDK - OOB write in UntwiddlePOTSquare64bpp
Source: CVE Program / CVE List V5
Vulnerability Description
A web page that contains unusual WebGPU content loaded into the GPU GLES render process can trigger a OOB read and/or write crash in the GPU GLES user-space shared library. On certain platforms, when the process executing graphics workload has system privileges this could enable further exploits on the device.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
使用越界的指针偏移
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-2026-74915

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-74915

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News Coverage for CVE-2026-74915 (1)

Same Patch Batch · Imagination Technologies · 2026-10-30 · 8 CVEs total

CVE-2026-65584 GPU DDK - Stack Buffer Overflow via undersized UFO address array in DumpStalledContextInfo
CVE-2026-15466 GPU DDK - Write UAF due to a race condition caused by insufficient locking in PVRSRVRGXClo
CVE-2026-65586 GPU DDK - Write UAF due to missing cleanup reference for abort command submitted via PVRSR
CVE-2026-65587 GPU DDK - OOB write in CalculateNPOTTwiddleSparsePageMap via TEXTURE_BASE_LEVEL change
CVE-2026-74912 GPU DDK - Fix for CVE-2026-49746 prevents the mapping of graphics buffers > 4GB
CVE-2026-19199 GPU DDK - OOB write due to freelist size integer overflow in RGXCreateHWRTDataSet
CVE-2026-18629 GPU DDK - libusc.so NPD due to integer overflow at ConvertSwitchToArrayLookup during WebGP

IV. Related Vulnerabilities

Same product: Graphics DDK
Same vendor: Imagination Technologies
Same weakness: CWE-823