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🛡️ CVE-2026-21734 — ddk

🟠 CVSS 7.7 — High ✅ No Known Exploit CWE-823 NVD
7.7
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

A web page that contains unusual GPU shader code is loaded into the GPU compiler process and can trigger a write out-of-bounds write crash in the GPU shader compiler library. On certain platforms, when the compiler process has system privileges this could enable further exploits on the device.

An edge case using a very small value in GPU shader code can cause a segmentation fault in the GPU shader compiler due to am out-of-bounds write.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity high, availability high.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

  • Attack vector: Local — a local account, shell or session on the host is needed.
  • Attack complexity: Low — the attack works reliably, with no preparation.
  • Privileges required: None — an unauthenticated stranger can try it.
  • User interaction: None — nobody has to be tricked into anything.
  • Scope: Unchanged — the damage stays inside the vulnerable component.
  • Confidentiality impact: None.
  • Integrity impact: High — total loss, or loss the attacker controls.
  • Availability impact: High — total loss, or loss the attacker controls.

Weakness class

CVE-2026-21734 is classified as CWE-823: Use of Out-of-range Pointer Offset. The product performs pointer arithmetic on a valid pointer, but it uses an offset that can point outside of the intended range of valid memory locations for the resulting pointer.

Affected software

CVE-2026-21734 is recorded against 1 package.

  • ddk

Timeline and source

Published on 26 June 2026 and last revised on 29 June 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

www.imaginationtech.com

Other advisories for this package

ddk has other advisories on record. If you are patching this one, these are worth checking on the same host:

Same weakness in other software

These advisories are the same class of weakness (CWE-823: Use of Out-of-range Pointer Offset) in other software:

Details

Severity HIGH
CVSS Score 7.7
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
CWE CWE-823
Public Exploit ✅ No
Source NVD
Published 2026-06-26
Updated 2026-08-20
Modified 2026-06-29
Fix URL N/A

Affected Packages

Software From version Fixed in
ddk — —

Similar Threats

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ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.

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