CVE-2026-68281

GPU job interruption via underestimated command-buffer demand

Published Aug 10, 2026 · Updated Aug 10, 2026

Improper dependency accounting in the Linux kernel allows local users to interrupt GPU jobs through paired submissions. job_count_remaining_native_deps() omits the fence between paired geometry and fragment jobs, so prepare_job() underestimates fragment CCCB demand. A compatible PowerVR device and an almost-full fragment CCCB are required; run_job() can then omit commands, trigger kernel warnings, and time out waiting jobs.

CVSS severity4.8
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper dependency accounting in the Linux kernel allows local users to interrupt GPU jobs through paired submissions. job_count_remaining_native_deps() omits the fence between paired geometry and fragment jobs, so prepare_job() underestimates fragment CCCB demand. A compatible PowerVR device and an almost-full fragment CCCB are required; run_job() can then omit commands, trigger kernel warnings, and time out waiting jobs.

The record

CVE
CVE-2026-68281
Published
Aug 10, 2026
Updated
Aug 10, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=6.8
  2. Affected versionversion=eaf01ee5ba28b97f96a3d3eec4c5fbfb37ee4cde <02b0da249c8f78d2bbf9f498bbd371c66142b0af
  3. Affected versionversion=eaf01ee5ba28b97f96a3d3eec4c5fbfb37ee4cde <943fa73ea0efa335d9c1800fcfac47915de4ff89
  4. Affected versionversion=eaf01ee5ba28b97f96a3d3eec4c5fbfb37ee4cde <9cd74f935306cd857f46686975c43383e1d95f94
  5. Affected versionversion=eaf01ee5ba28b97f96a3d3eec4c5fbfb37ee4cde <a673171502e87acb5a9e2923f4cf9dce521fd05e

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.8; version=eaf01ee5ba28b97f96a3d3eec4c5fbfb37ee4cde <02b0da249c8f78d2bbf9f498bbd371c66142b0af; version=eaf01ee5ba28b97f96a3d3eec4c5fbfb37ee4cde <943fa73ea0efa335d9c1800fcfac47915de4ff89; version=eaf01ee5ba28b97f96a3d3eec4c5fbfb37ee4cde <9cd74f935306cd857f46686975c43383e1d95f94; version=eaf01ee5ba28b97f96a3d3eec4c5fbfb37ee4cde <a673171502e87acb5a9e2923f4cf9dce521fd05e

Published CVSS scores

3.3SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
4.8SUSECVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
2.5Amazon LinuxCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L

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

T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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