PT-2026-44336 · Linux+2 · Linux Kernel+2

CVE-2026-46213

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Published

2026-05-28

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Updated

2026-09-07

CVSS v3.1

7.8

High

VectorAV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)
Description A slab use-after-free issue exists in the appletb-kbd driver. The problem occurs during driver tear-down in the appletb kbd probe and appletb kbd remove() functions due to improper sequencing of the inactivity timer cleanup. Specifically, the inactivity timer can remain reachable or be re-armed via .event callbacks after the backlight device has been freed, leading to a crash when backlight device set brightness() attempts to call mutex lock() on freed memory.
Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Use After Free

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Weakness Enumeration

Related Identifiers

CVE-2026-46213
OPENSUSE-SU-2026:10954-1
USN-8566-1
USN-8568-1
USN-8569-1
USN-8593-1
USN-8603-1
USN-8618-1
USN-8663-1
USN-8664-1
USN-8728-1

Affected Products

Linuxmint
Linux Kernel
Ubuntu