TI-2026-82816 Aliases CVE-2026-65586 GHSA-8pw8-g8hf-x6v7

Graphics DDK use after free of GPU-shared buffer

LOW 30CWE-416Published 2026-10-30 · Updated 2026-11-05

Key facts

Attack vector: Local
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: None · High · High
Fix status: Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.

Summary

Imagination Technologies Graphics DDK versions 1.18 RTM2, 23.2 RTM2, 24.2 RTM2, 26.1 RTM2, and from 25.1 RTM2 through 25.3 RTM are affected. A memory buffer shared between the driver and GPU firmware can be freed while still in use, which is a use after free (CWE-416). Software run by a non-privileged local user can replace that buffer, which lets the GPU access memory the driver does not manage and enables arbitrary memory reads or writes.

Written with Claude Haiku 5.5 from the sources below · 2026-11-05

Description from the CNA

Software installed and run as a non-privileged user may conduct improper GPU system calls to free memory in still in use, replace with another allocation and cause arbitrary memory reads or writes to physical memory pages. A memory buffer managed by a CPU thread of control (driver) and accessed by a GPU thread of control (firmware) can be freed while in use. Software installed and run as a non-privileged user may replace that buffer with another and replace a shared resource (memory page address list) managed by the CPU thread of control (driver) leading to the GPU accessing memory not managed by the CPU thread of control (driver).

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00101 0th percentileScored 2026-11-07

Fix Fixed Graphics DDK (Imagination Technologies): 26.2 RTM

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Imagination Technologies	Graphics DDK	1.18 RTM2; 23.2 RTM2; 24.2 RTM2; 25.1 RTM2 – 25.3 RTM; 26.1 RTM2	26.2 RTM	Patch available	CNA

Graphics DDK VendorImagination Technologies Affected 1.18 RTM2; 23.2 RTM2; 24.2 RTM2; 25.1 RTM2 – 25.3 RTM; 26.1 RTM2 Fixed in 26.2 RTM Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:imaginationtech:ddk::::::::	—	—	Imagination Technologies

cpe:2.3:a:imaginationtech:ddk:*:*:*:*:*:*:*:* Versions — — ·Imagination Technologies

Remediation

Update Imagination Technologies Graphics DDK to version 26.2 RTM, the fixed version listed for all affected releases.

Written with Claude Haiku 5.5 from the sources below · 2026-11-05

Fix · CNA Graphics DDK (Imagination Technologies) Fixed in 26.2 RTM

Timeline

2026-10-30 Threatist record created from CVE-2026-65586
2026-10-30 Alias added: GHSA-8pw8-g8hf-x6v7
2026-11-05 CVSS score added · CISA ADP
2026-11-05 CISA SSVC decision points changed

References

Other 1

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

TI-2023-04574 GPU kernel implementations susceptible to memory leak CVSS 3.1MEDIUM 6.5
TI-2026-82822 Integer truncation in Imagination Graphics DDK limits buffer mapping CVSS 3.1CRITICAL 9.8
TI-2026-29783 GPU DDK - OOB Write in CalculateNPOTTwiddleSparsePageMap3D CVSS 3.1CRITICAL 9.8
TI-2026-13612 GPU DDK - Integer overflow in _PMRLogicalOffsetToPhysicalOffset CVSS 3.1CRITICAL 9.8
TI-2025-12749 GPU DDK - libusc UAF via WebGPU shaders at MergeConsecutiveBarriersBP CVSS 3.1CRITICAL 9.8
TI-2025-05971 GPU DDK - RGXFW_CTL.pui8FWScratchBuf Leak/Overwrite CVSS 3.1CRITICAL 9.8

See all 95 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences