PT-2026-44336 · Linux · Linux Kernel

Published 2026-05-28 · Updated 2026-06-04 · CVE-2026-46213

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV: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

Weakness Enumeration

CWE-416

Related Identifiers

CVE-2026-46213

OPENSUSE-SU-2026:10954-1

Affected Products

Linux Kernel

References · 290

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46213.json · Exploit
• https://cve.org/CVERecord?id=CVE-2026-46213 · Security Note
• https://osv.dev/vulnerability/openSUSE-SU-2026:10954-1 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2026-46213 · Vendor Advisory
• https://git.kernel.org/stable/c/4db2af929279c799b5653a39eb0795c72baffca4 · Patch
• https://git.kernel.org/stable/c/93d989e47bc316c793a69c6a332e053c90e29f02 · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-46213 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-46213 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-46213 · Vendor Advisory
• https://git.kernel.org/stable/c/59a79938ca5541fe55d675304116b7ea684afef0 · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-46213 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-46213 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-46213 · Security Note
• https://suse.com/security/cve/CVE-2026-46166 · Note
• https://suse.com/security/cve/CVE-2026-45996 · Note