PT-2026-37421 · Linux · Linux Kernel

Published 2026-05-06 · Updated 2026-05-26 · CVE-2026-43111

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 use-after-free issue exists in the HID Roccat component. The roccat report event() function iterates over the device->readers list without holding the readers lock mutex. This allows a concurrent roccat release() function to remove and free a reader while it is still being accessed.

Recommendations Protect the readers list traversal by using the readers lock mutex.

Fix

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

CVE-2026-43111

Affected Products

Linux Kernel

References · 20

• https://git.kernel.org/stable/c/e16a6d11bd77b81632165f02cf0d5946df74b3b7 · Patch
• https://ubuntu.com/security/CVE-2026-43111 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-43111 · Security Note
• https://git.kernel.org/stable/c/bca0b595e15450dd66b1153c76c4ef1087ee011b · Patch
• https://git.kernel.org/stable/c/e6a445513fbc6a0329d2d5ff375b6725750ec5a6 · Patch
• https://git.kernel.org/stable/c/36bb2d0b915014bbdc5044982b31b57b78045b93 · Patch
• https://security-tracker.debian.org/tracker/CVE-2026-43111 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-43111 · Security Note
• https://osv.dev/vulnerability/ROOT-OS-UBUNTU-2204-CVE-2026-43111 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2026-43111 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-43111 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-43111 · Vendor Advisory
• https://git.kernel.org/stable/c/d802d848308b35220f21a8025352f0c0aba15c12 · Patch
• https://docs.bell-sw.com/security/cves/CVE-2026-43111 · Note
• https://git.kernel.org/stable/c/181ea51ab0f6370842c5b49cfb86824253a1189e · Note