CVE-2026-93128

The event notification callback might access kbd_backlight even when it was not successfully registered with the LED subsystem. The same happens inside acpi_remove(), where the LED devices are unregistered unconditionally.

Fix this by tracking the availability of the kbd_backlight LED device and use devm_led_classdev_register() to let devres take care of unregistering the LED devices during removal. For this the parent device of the LED devices is changed to the native platform device.

Database specific

{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93128.json"
}

References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type: GIT
Repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events: Introduced

ae26278829a80ad0e60ff004de71e9276cee5dc0

Fixed

4fbfe3714f645b6c64c9ba8faa83b27e4c9f2edd

Fixed

9a85e2d35e54248aca39bad4f4152ed34de1995f

Fixed

acc190322250562d5f28860f4ae1ebaf3e304fc2

Fixed

3e91964aa74ab261aa15d9d96318eded2fd9d22a

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-93128.json"

Linux / Kernel

Package

Name: Kernel

Affected ranges

Type: ECOSYSTEM
Events: Introduced

5.15.0

Fixed

6.12.110

Type: ECOSYSTEM
Events: Introduced

6.13.0

Fixed

6.18.52

Type: ECOSYSTEM
Events: Introduced

6.19.0

Fixed

7.2.6

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-93128.json"