CVE-2026-93084Hinoki check available

Kernel disruption via failed SCMI handle cleanup

Published Sep 17, 2026 · Updated Sep 17, 2026

Handle lifecycle errors in Linux ARM SCMI allow local users to disrupt kernel operation through protocol-device binding failures. The SCMI bus notifier retains handles after failed probes and permits binding without a parent dependency link, leaking references or leaving handles into a torn-down instance. Triggering requires privileged local access and SCMI binding failures; the disclosures do not specify whether disruption manifests as a crash or hang.

CVSS severity6.7
Medium
EPSS probability0.21%
Next 30 days · Oct 18, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Handle lifecycle errors in Linux ARM SCMI allow local users to disrupt kernel operation through protocol-device binding failures. The SCMI bus notifier retains handles after failed probes and permits binding without a parent dependency link, leaking references or leaving handles into a torn-down instance. Triggering requires privileged local access and SCMI binding failures; the disclosures do not specify whether disruption manifests as a crash or hang.

The record

CVE
CVE-2026-93084
Published
Sep 17, 2026
Updated
Sep 17, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Sep 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 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=6.3
  2. Affected versionversion=971fc0665f1361f23251e4d85fac4aed1b683505 <0f860db24ee95e5da4866303a35e55098b9641b3
  3. Affected versionversion=971fc0665f1361f23251e4d85fac4aed1b683505 <77d2985d1e80e67f32026fc03e975c4c83cc543d
  4. Affected versionversion=971fc0665f1361f23251e4d85fac4aed1b683505 <a54dc23e8bd2246c28eafffa60b4634f0d1a11cc
  5. Affected versionversion=971fc0665f1361f23251e4d85fac4aed1b683505 <df273eced7cec550465fd1bb82a5d2c3c7d3c437
  6. Affected versionversion=971fc0665f1361f23251e4d85fac4aed1b683505 <e3a5c30d233ca5d3e799a80da806554c703bda13

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linuxversion=6.3; version=971fc0665f1361f23251e4d85fac4aed1b683505 <0f860db24ee95e5da4866303a35e55098b9641b3; version=971fc0665f1361f23251e4d85fac4aed1b683505 <77d2985d1e80e67f32026fc03e975c4c83cc543d; version=971fc0665f1361f23251e4d85fac4aed1b683505 <a54dc23e8bd2246c28eafffa60b4634f0d1a11cc; version=971fc0665f1361f23251e4d85fac4aed1b683505 <df273eced7cec550465fd1bb82a5d2c3c7d3c437; version=971fc0665f1361f23251e4d85fac4aed1b683505 <e3a5c30d233ca5d3e799a80da806554c703bda13

Published CVSS scores

6.7SUSECVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
4.1Amazon LinuxCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H
4.1SUSECVSS:3.1/AV:L/AC:H/PR:H/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.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

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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