CVE-2026-90406

Availability loss via unchecked runtime-PM resume failure

Published Sep 17, 2026 · Updated Sep 17, 2026

Unchecked resume handling in Linux 6.15 Iris allows local users to disrupt device operation when runtime power management fails. The iris_core_deinit() function ignores failure from pm_runtime_resume_and_get(), then powers off hardware and calls pm_runtime_put_sync() without acquiring a matching reference. Exposure requires the affected Iris driver and failed resume during teardown; published records do not specify whether interruption takes the form of a hang or crash.

CVSS severity2.5
Low
EPSS probability0.21%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unchecked resume handling in Linux 6.15 Iris allows local users to disrupt device operation when runtime power management fails. The iris_core_deinit() function ignores failure from pm_runtime_resume_and_get(), then powers off hardware and calls pm_runtime_put_sync() without acquiring a matching reference. Exposure requires the affected Iris driver and failed resume during teardown; published records do not specify whether interruption takes the form of a hang or crash.

The record

CVE
CVE-2026-90406
Published
Sep 17, 2026
Updated
Sep 17, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

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=6.15
  2. Affected versionversion=bb8a95aa038e099f5ec82c466e996b006e05abd7 <75d79879ec3cbfd288144b0ae4c3e3fa7700c5fc
  3. Affected versionversion=bb8a95aa038e099f5ec82c466e996b006e05abd7 <cb83cfff8dff5d546fadce15596e01b1504b632a
  4. Affected versionversion=bb8a95aa038e099f5ec82c466e996b006e05abd7 <e7768f3dae9f2c6e5b80e9c02429550ea39f2be6

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.15; version=bb8a95aa038e099f5ec82c466e996b006e05abd7 <75d79879ec3cbfd288144b0ae4c3e3fa7700c5fc; version=bb8a95aa038e099f5ec82c466e996b006e05abd7 <cb83cfff8dff5d546fadce15596e01b1504b632a; version=bb8a95aa038e099f5ec82c466e996b006e05abd7 <e7768f3dae9f2c6e5b80e9c02429550ea39f2be6

Published CVSS scores

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.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

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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