CVE-2026-90014

Kernel crash via trace array lifetime race

Published Sep 16, 2026 · Updated Sep 16, 2026

A use-after-free in Linux 7.0 allows attackers to crash the kernel by racing tracefs instance removal with filter or trigger reads. The show_event_filters and show_event_triggers open paths fail to hold a trace_array reference, so rmdir can free the instance while readers iterate its events. Triggering the race requires local access that can read those tracefs files and remove the same tracing instance; success causes a use-after-free kernel crash, with no other impact reported.

CVSS severityUnavailable
Unscored
EPSS probabilityUnavailable
No score available in this record
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A use-after-free in Linux 7.0 allows attackers to crash the kernel by racing tracefs instance removal with filter or trigger reads. The show_event_filters and show_event_triggers open paths fail to hold a trace_array reference, so rmdir can free the instance while readers iterate its events. Triggering the race requires local access that can read those tracefs files and remove the same tracing instance; success causes a use-after-free kernel crash, with no other impact reported.

The record

CVE
CVE-2026-90014
Published
Sep 16, 2026
Updated
Sep 16, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 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=7.0
  2. Affected versionversion=729757b96a662d87e334fe8b837707800d8fd551 <2ee3f7d43f79efaca0cd84a6798653d9d75ce60b
  3. Affected versionversion=729757b96a662d87e334fe8b837707800d8fd551 <f4a771cc684c7354b6200147f7252c58d17408ff

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=7.0; version=729757b96a662d87e334fe8b837707800d8fd551 <2ee3f7d43f79efaca0cd84a6798653d9d75ce60b; version=729757b96a662d87e334fe8b837707800d8fd551 <f4a771cc684c7354b6200147f7252c58d17408ff

Published CVSS scores

No CVSS assessment is available in this record.

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.

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

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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499Endpoint Denial of Service

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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