PT-2026-6171 · Unknown+4 · Snd Ctl Led.Ko+4
Published
2026-01-01
·
Updated
2026-06-04
·
CVE-2026-23101
CVSS v3.1
4.7
Medium
| Vector | AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
A race condition exists in the Linux kernel's LED class initialization. Specifically, LEDs were being added to the
leds list before the led init core() function was called, leaving a window where led trigger register() could call led set brightness() with an uninitialized work queue. This issue was observed in the lenovo-thinkpad-t14s EC driver when registering LEDs with a default trigger provided by snd ctl led.ko. The race condition could lead to a kernel warning and potential instability. The leds list is a data structure used to manage registered LEDs. The led init core() function initializes core LED functionality. The led trigger register() function registers a trigger for an LED. The led set brightness() function sets the brightness of an LED. The led classdev.set brightness work is a work queue item responsible for handling brightness updates.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Use of Uninitialized Resource
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Weakness Enumeration
Related Identifiers
Affected Products
Linuxmint
Linux Kernel
Ubuntu
Lenovo-Thinkpad-T14S Ec Driver
Snd Ctl Led.Ko