CVE-2026-45914

Kernel crash via ibmpex sysfs teardown race

Published May 27, 2026 · Updated May 27, 2026

A race condition in the Linux kernel ibmpex hwmon driver allows local users to crash the kernel through a concurrent sysfs sensor read. During device removal, teardown clears driver data before removing sensor attributes, while ibmpex_show_sensor() dereferences the cleared pointer without a NULL check. Exploitation requires the ibmpex driver and a sensor-file read to overlap device teardown, resulting in a local service interrupt.

CVSS severity7.8
High
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

A race condition in the Linux kernel ibmpex hwmon driver allows local users to crash the kernel through a concurrent sysfs sensor read. During device removal, teardown clears driver data before removing sensor attributes, while ibmpex_show_sensor() dereferences the cleared pointer without a NULL check. Exploitation requires the ibmpex driver and a sensor-file read to overlap device teardown, resulting in a local service interrupt.

The record

CVE
CVE-2026-45914
Published
May 27, 2026
Updated
May 27, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-416, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 27, 2026CVE publishedPublication date reported by the CVE source.
  2. May 27, 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=3ce9b7ae9d4d148672b35147aaf7987a4f82bb94 <05112ba67c824ab416cd54307c0b50aba9f0047a
  2. Affected versionversion=5.10.248 <5.10.252
  3. Affected versionversion=533ead425f8109b02fecc7e72d612b8898ec347a <efd68429f23fb4015b0ebc2392334059e06fad18
  4. Affected versionversion=5aa2139201667c1f644601e4529c4acd6bf8db5a <14a38784e09aebc21207dc32fffa05247fc3dd64
  5. Affected versionversion=6.1.160 <6.1.165
  6. Affected versionversion=6.12.64 <6.12.75
  7. Affected versionversion=6.18.3 <6.18.14
  8. Affected versionversion=6.19
  9. Affected versionversion=6.6.120 <6.6.128
  10. Affected versionversion=68d62e5bebbd118b763e8bb210d5cf2198ef450c <914b47c9b824d3d74f31c764163edf93302100b1
  11. Affected versionversion=6946c726c3f4c36f0f049e6f97e88c510b15f65d <894d9c7aab68fd0c70c78b1d03c8fa589fb0f67d
  12. Affected versionversion=6946c726c3f4c36f0f049e6f97e88c510b15f65d <8bde3e395a85017f12af2b0ba5c3684f5af9c006
  13. Affected versionversion=fa37adcf1d564ef58b9dfb01b6c36d35c5294bad <f448acd86835a650f9ea83460b9ca347d3aafba5

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=3ce9b7ae9d4d148672b35147aaf7987a4f82bb94 <05112ba67c824ab416cd54307c0b50aba9f0047a; version=5.10.248 <5.10.252; version=533ead425f8109b02fecc7e72d612b8898ec347a <efd68429f23fb4015b0ebc2392334059e06fad18; version=5aa2139201667c1f644601e4529c4acd6bf8db5a <14a38784e09aebc21207dc32fffa05247fc3dd64; version=6.1.160 <6.1.165; version=6.12.64 <6.12.75; version=6.18.3 <6.18.14; version=6.19; version=6.6.120 <6.6.128; version=68d62e5bebbd118b763e8bb210d5cf2198ef450c <914b47c9b824d3d74f31c764163edf93302100b1; version=6946c726c3f4c36f0f049e6f97e88c510b15f65d <894d9c7aab68fd0c70c78b1d03c8fa589fb0f67d; version=6946c726c3f4c36f0f049e6f97e88c510b15f65d <8bde3e395a85017f12af2b0ba5c3684f5af9c006; version=fa37adcf1d564ef58b9dfb01b6c36d35c5294bad <f448acd86835a650f9ea83460b9ca347d3aafba5

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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

CWE-416Use After Free
T1499.004Application or System Exploitation

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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