TI-2026-36660 Aliases CVE-2026-49743 GHSA-jh3g-mp7x-hgwq

GPU DDK - Write UAF of sync checkpoint in GPU kick function after export fence file descriptor is prematurely closed

LOW 35CWE-416Published 2026-07-24 · Updated 2026-07-24

Key facts

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

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-416 and the CVSS impact.

Summary

Software installed and run as a non-privileged user may conduct improper GPU system calls to manipulate the lifetimes of synchronisation objects in the kernel, leading to read/write UAFs. During workload submission involving a fence exported by the GPU driver, the reference count of the underlying synchronisation primitive is not properly incremented. This can be exploited, by destroying the exported fence and prematurely release the underlying primitive, resulting in a potential use-after-free condition.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00162 5th percentileScored 2026-11-07

Fix Fixed Graphics DDK (Imagination Technologies): 1.18 RTM2, 23.2 RTM2, 26.1 RTM2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

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	24.2 RTM2; 25.1 RTM2 – 25.3 RTM; 26.1 RTM1	1.18 RTM2, 23.2 RTM2, 26.1 RTM2	Patch available	CNA

Graphics DDK VendorImagination Technologies Affected 24.2 RTM2; 25.1 RTM2 – 25.3 RTM; 26.1 RTM1 Fixed in 1.18 RTM2, 23.2 RTM2, 26.1 RTM2 Patch available CNA

CPE configurations NVD · 5

CPE	Versions	Role	Vendor
cpe:2.3:a:imaginationtech:ddk::::::::	after 24.2, before 26.1	Vulnerable	Imagination Technologies
cpe:2.3:a:imaginationtech:ddk:24.2:rtm2::::::	24.2 rtm2	Vulnerable	Imagination Technologies
cpe:2.3:a:imaginationtech:ddk:26.1:rtm1::::::	26.1 rtm1	Vulnerable	Imagination Technologies
cpe:2.3:o:google:android:-:::::::*	not specified by NVD	Running on	Google
cpe:2.3:o:linux:linux_kernel:-:::::::*	not specified by NVD	Running on	Linux

cpe:2.3:a:imaginationtech:ddk:*:*:*:*:*:*:*:* Versions after 24.2, before 26.1 Vulnerable ·Imagination Technologies
cpe:2.3:a:imaginationtech:ddk:24.2:rtm2:*:*:*:*:*:* Versions 24.2 rtm2 Vulnerable ·Imagination Technologies
cpe:2.3:a:imaginationtech:ddk:26.1:rtm1:*:*:*:*:*:* Versions 26.1 rtm1 Vulnerable ·Imagination Technologies
cpe:2.3:o:google:android:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Google
cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Linux

Remediation

Fix · CNA Graphics DDK (Imagination Technologies) Fixed in 1.18 RTM2, 23.2 RTM2, 26.1 RTM2

Timeline

2026-10-02 Threatist record created from CVE-2026-49743
2026-10-03 Alias added: GHSA-jh3g-mp7x-hgwq

References

Advisory 1

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

TI-2023-04574 GPU kernel implementations susceptible to memory leak CVSS 3.1MEDIUM 6.5
TI-2026-13612 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-2025-18845 GPU DDK - GPU Register value contents leaked from secure workloads to non-secure world CVSS 3.1CRITICAL 9.1
TI-2026-17504 GPU DDK - libusc OOB write at ConvertSwitchToArrayLookupBP during WebGPU shader compilation CVSS 3.1CRITICAL 9.6
TI-2026-17506 GPU DDK - libusc OOB write at TreeRemove during WebGPU shader compilation CVSS 3.1HIGH 7.7

See all 34 →

Sources

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