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CVE-2026-21733— GPU DDK - Incorrect flags validation in RGXDerivePTEProt8 can allow GPU to overwrite read-only shared memory (e.g. libc.so)

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GPU内存保留保护处理不当，可能导致以非特权用户身份运行的软件获得对只读内存和文件的写入权限。

AI Predicted 9.8 Difficulty: Theoretical EPSS 0.10% · P1

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 5

VendorProduct Version RangeStatus
Imagination Technologies Graphics DDK 1.18 RTM affected
23.2 RTM affected
24.1 RTM≤ 24.2 RTM affected
25.1 RTM≤ 25.3 RTM affected
26.1 RTM unaffected
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I. Basic Information for CVE-2026-21733

Vulnerability Information
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Vulnerability Title
GPU DDK - Incorrect flags validation in RGXDerivePTEProt8 can allow GPU to overwrite read-only shared memory (e.g. libc.so)
Source: CVE Program / CVE List V5
Vulnerability Description
Software installed and run as a non-privileged user may conduct improper GPU system calls to gain write permission to read-only wrapped user-mode memory and files. This is caused by improper handling of GPU memory reservation protections.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
不充分权限或特权的处理不恰当
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GPU内存保留保护处理不当，可能导致以非特权用户身份运行的软件获得对只读内存和文件的写入权限。
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-2026-21733

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III. Intelligence Information for CVE-2026-21733

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News Coverage for CVE-2026-21733 (1)

IV. Related Vulnerabilities

Same product: Graphics DDK
Same vendor: Imagination Technologies
Same weakness: CWE-280

V. Comments for CVE-2026-21733

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