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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-49743
StatePUBLISHED
Assignerimaginationtech
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-24 09:16:24 UTC
Updated2026-08-12 18:51:16 UTC
DescriptionSoftware 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.

Risk And Classification

Primary CVSS: v3.1 7.8 HIGH from ADP

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.001100000 probability, percentile 0.014550000 (date 2026-08-13)

Problem Types: CWE-416 | CWE-416 CWE-416: Use After Free (4.20)

VersionSourceTypeScoreSeverityVector
3.1ADPDECLARED7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Google Android - All All All
Application Imaginationtech Ddk All All All All
Application Imaginationtech Ddk 24.2 rtm2 All All
Application Imaginationtech Ddk 26.1 rtm1 All All
Operating System Linux Linux Kernel - All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Imagination Technologies Graphics DDK unaffected 1.18 RTM2 custom Linux, Android
CNA Imagination Technologies Graphics DDK unaffected 23.2 RTM2 custom Linux, Android
CNA Imagination Technologies Graphics DDK affected 24.2 RTM2 custom Linux, Android
CNA Imagination Technologies Graphics DDK affected 25.1 RTM2 25.3 RTM custom Linux, Android
CNA Imagination Technologies Graphics DDK affected 26.1 RTM1 custom Linux, Android
CNA Imagination Technologies Graphics DDK unaffected 26.1 RTM2 custom Linux, Android

References

ReferenceSourceLinkTags
www.imaginationtech.com/gpu-driver-vulnerabilities 367425dc-4d06-4041-9650-c2dc6aaa27ce www.imaginationtech.com Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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