CVE-2026-21733

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

HIGH

7.3

CVSS Score

Published: April 17, 2026 at 04:08 PM UTC

Updated: August 12, 2026 at 04:08 PM UTC

2 products affected across 2 vendorsDdkGraphics DDK· also runs on 2 platforms

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Severity

HIGH7.3

Exploit prediction

EPSS 0.1%

SSVC

No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Ddk · Imaginationtech

95%

v < 25.325.3 rtm

Affected range stops below 25.3, so it looks safe — our inference, not a vendor statement

google-android (environment) · linux-linux-kernel (environment)

Graphics DDK · Imagination

60%

24.1 RTM ≤ v ≤ 24.2 RTM25.1 RTM ≤ v ≤ 25.3 RTM1.18 RTM 23.2 RTM 24.1 RTM 25.1 RTM

Vendor states this is fixed in 26.1 RTM (unaffected)

Runs on — not affected

The affected product only carries this flaw when running on these platforms. The platforms themselves are not vulnerable.

Android · Google

95%

Linux Kernel · Linux

95%

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://www.imaginationtech.com/gpu-driver-vulnerabilities/

References (1)

Vendor Advisory

Source: cverecord

https://www.imaginationtech.com/gpu-driver-vulnerabilities/

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.3HIGHCISA-ADP

Attack Vector: LOCAL
Complexity: LOW
Privileges: LOW
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: HIGH
Availability: LOW

Vector?

Quick Info

StatusANALYZED

CWE

CWE-280CWE-20

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