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CVE-2026-15466unknown

GPU DDK - Write UAF due to a race condition caused by insufficient locking in PVRSRVRGXCloseHWPerfClientStreamKM()

Impact

Imagination Technologies' Graphics DDK versions 24.2 RTM2, 25.1 RTM2 to 25.3 RTM, and 26.1 RTM2 have a use-after-free weakness due to a race condition in PVRSRVRGXCloseHWPerfClientStreamKM(). A non-privileged user may cause improper GPU system calls, leading to reads and/or writes of kernel heap memory.

Summarized by @cf/meta/llama-3.3-70b-instruct-fp8-fast. Verify details against the original sources.

Affected packages

This source has no supported package-version data for matching. You can read the advisory here, but this record alone cannot power a dependency check.

Affected products

Vendor version evidence. Product records are separate from automatic dependency matching.

Imagination Technologies · imaginationtech

Graphics DDK

6 ranges
imaginationtech version evidence
Platforms: Linux, Android

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affected

24.2 RTM2

custom versions

25.1 RTM2 → through 25.3 RTM

custom versions

26.1 RTM2

custom versions

unaffected

1.18 RTM2

custom versions

23.2 RTM2

custom versions

26.2 RTM

custom versions

unknown

Other versions: unknown

Original source description

Software installed and run as a non-privileged user may conduct improper GPU system calls to cause race condition in hardware performance counters buffer’s destruction path leading to read and/or write UAF.

The race condition in the destruction path could lead to reference counter being decremented in non-atomical way allowing other code paths using a freed object to read and/or write kernel heap memory.

Inside the record

Evidence available

Package identity · not supplied
Version evidence
Remediation guidance · not supplied
Weakness classification
Additional publishers · not supplied

Describes the evidence in this view, not whether the product is safe.

Original records

CVE-2026-15466

View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.

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Underlying weaknesses

The source’s classification of what caused the vulnerability.

CWE-416 ↗

CWE-416: Use After Free

imaginationtech

Related →
Contributing organizations · 1
imaginationtech

Assigning organization

2026-10-30

What changed

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References

1 sources
www.imaginationtech.com/gpu-driver-vulnerabilities/
Security advisoryimaginationtech