CVE-2026-43195

GPU service interruption via unchecked user queue size

Published May 6, 2026 · Updated May 6, 2026

Improper input validation in the Linux Kernel AMDGPU user-queue component allows local users to cause GPU faults via malformed queue sizes. amdgpu_userq_input_args_validate accepts a user-supplied queue_size without requiring a power of two or the 4 KiB AMDGPU_GPU_PAGE_SIZE minimum. Exploitation requires local GPU access and a supported AMDGPU user-queue path; malformed ring sizing can interrupt GPU processing, with no reported data access or code execution.

CVSS severity5.5
Medium
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in the Linux Kernel AMDGPU user-queue component allows local users to cause GPU faults via malformed queue sizes. amdgpu_userq_input_args_validate accepts a user-supplied queue_size without requiring a power of two or the 4 KiB AMDGPU_GPU_PAGE_SIZE minimum. Exploitation requires local GPU access and a supported AMDGPU user-queue path; malformed ring sizing can interrupt GPU processing, with no reported data access or code execution.

The record

CVE
CVE-2026-43195
Published
May 6, 2026
Updated
May 6, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 6, 2026CVE publishedPublication date reported by the CVE source.
  2. May 6, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <8079b87c02e531cc91601f72ea8336dd2262fdf1
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <9f6cc309cd15922fe58cab2dfa1b5993ad31dec7
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <cf2a37be899dc1b01f53bf1d0157330eaf3e3f55

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <8079b87c02e531cc91601f72ea8336dd2262fdf1; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <9f6cc309cd15922fe58cab2dfa1b5993ad31dec7; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <cf2a37be899dc1b01f53bf1d0157330eaf3e3f55

Published CVSS scores

5.5NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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