CVE-2025-23144

Service interruption via unlocked backlight teardown

Published May 1, 2025 · Updated May 11, 2026

Improper locking in the Linux kernel led_bl driver allows local users to interrupt service during backlight device removal. led_bl_remove() calls led_sysfs_disable() without holding the required led_access lock, allowing led_sysfs_enable() to run during teardown without its locking invariant. Triggering the fault requires local low-privileged access and removal of an LED-backed backlight device; no data access or modification is reported.

CVSS severity5.5
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper locking in the Linux kernel led_bl driver allows local users to interrupt service during backlight device removal. led_bl_remove() calls led_sysfs_disable() without holding the required led_access lock, allowing led_sysfs_enable() to run during teardown without its locking invariant. Triggering the fault requires local low-privileged access and removal of an LED-backed backlight device; no data access or modification is reported.

The record

CVE
CVE-2025-23144
Published
May 1, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 1, 2025CVE publishedPublication date reported by the CVE source.
  2. May 11, 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=5.6
  2. Affected versionversion=ae232e45acf9621f2c96b41ca3af006ac7552c33 <11d128f7eacec276c75cf4712880a6307ca9c885
  3. Affected versionversion=ae232e45acf9621f2c96b41ca3af006ac7552c33 <1c82f5a393d8b9a5c1ea032413719862098afd4b
  4. Affected versionversion=ae232e45acf9621f2c96b41ca3af006ac7552c33 <276822a00db3c1061382b41e72cafc09d6a0ec30
  5. Affected versionversion=ae232e45acf9621f2c96b41ca3af006ac7552c33 <61a5c565fd2442d3128f3bab5f022658adc3a4e6
  6. Affected versionversion=ae232e45acf9621f2c96b41ca3af006ac7552c33 <74c7d67a3c305fc1fa03c32a838e8446fb7aee14
  7. Affected versionversion=ae232e45acf9621f2c96b41ca3af006ac7552c33 <87d947a0607be384bfe7bb0935884a711e35ca07
  8. Affected versionversion=ae232e45acf9621f2c96b41ca3af006ac7552c33 <b447885ec9130cf86f355e011dc6b94d6ccfb5b7
  9. Affected versionversion=ae232e45acf9621f2c96b41ca3af006ac7552c33 <b8ddf5107f53789448900f04fa220f34cd2f777e

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.6; version=ae232e45acf9621f2c96b41ca3af006ac7552c33 <11d128f7eacec276c75cf4712880a6307ca9c885; version=ae232e45acf9621f2c96b41ca3af006ac7552c33 <1c82f5a393d8b9a5c1ea032413719862098afd4b; version=ae232e45acf9621f2c96b41ca3af006ac7552c33 <276822a00db3c1061382b41e72cafc09d6a0ec30; version=ae232e45acf9621f2c96b41ca3af006ac7552c33 <61a5c565fd2442d3128f3bab5f022658adc3a4e6; version=ae232e45acf9621f2c96b41ca3af006ac7552c33 <74c7d67a3c305fc1fa03c32a838e8446fb7aee14; version=ae232e45acf9621f2c96b41ca3af006ac7552c33 <87d947a0607be384bfe7bb0935884a711e35ca07; version=ae232e45acf9621f2c96b41ca3af006ac7552c33 <b447885ec9130cf86f355e011dc6b94d6ccfb5b7; version=ae232e45acf9621f2c96b41ca3af006ac7552c33 <b8ddf5107f53789448900f04fa220f34cd2f777e

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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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

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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