CVE-2026-15466— GPU DDK - Write UAF due to a race condition caused by insufficient locking in PVRSRVRGXCloseHWPerfClientStreamKM()
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并运行的软件，可能通过执行不当的 GPU 系统调用，在硬件性能计数器缓冲区的销毁路径中引发竞态条件，从而导致释放后读取（UAF）和/或释放后写入漏洞。 该销毁路径中的竞态条件可能导致引用计数器以非原子方式递减，使得其他代码路径在对象已被释放后仍能访问该对象，进而读取和/或写入内核堆内存。
Possible ATT&CK Techniques 1 AI
T1068.004
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I. Basic Information for CVE-2026-15466
Vulnerability Information
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Vulnerability Title
GPU DDK - Write UAF due to a race condition caused by insufficient locking in PVRSRVRGXCloseHWPerfClientStreamKM()
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 race condition in hardware performance counters buffer’s destruction path leading to read and/or write UAF.
The race condition in the destruction path could lead to reference counter being decremented in non-atomical way allowing other code paths using a freed object to read and/or write kernel heap memory.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
释放后使用
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-2026-15466
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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No public POC found.
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News Coverage for CVE-2026-15466 (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-2026-65586 | 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-2026-74915 | GPU DDK - OOB write in UntwiddlePOTSquare64bpp | |
| 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
-
CVE-2026-74915
GPU DDK - OOB write in UntwiddlePOTSquare64bpp -
CVE-2026-74912
GPU DDK - Fix for CVE-2026-49746 prevents the mapping of gra -
CVE-2026-19199
GPU DDK - OOB write due to freelist size integer overflow in -
CVE-2026-18629
GPU DDK - libusc.so NPD due to integer overflow at ConvertSw -
CVE-2026-65587
GPU DDK - OOB write in CalculateNPOTTwiddleSparsePageMap via
Same vendor: Imagination Technologies
-
CVE-2026-74915
GPU DDK - OOB write in UntwiddlePOTSquare64bpp -
CVE-2026-74912
GPU DDK - Fix for CVE-2026-49746 prevents the mapping of gra -
CVE-2026-19199
GPU DDK - OOB write due to freelist size integer overflow in -
CVE-2026-18629
GPU DDK - libusc.so NPD due to integer overflow at ConvertSw -
CVE-2026-65587
GPU DDK - OOB write in CalculateNPOTTwiddleSparsePageMap via
Same weakness: CWE-416