CVE-2026-43111

Kernel memory corruption via unlocked reader traversal

Published May 6, 2026 · Updated May 6, 2026

Use-after-free in Linux kernel roccat HID support allows local users to access freed reader memory by racing close with event delivery. roccat_report_event() traverses device->readers without readers_lock, while concurrent roccat_release() removes and frees an entry still in use. Reachability requires low-privilege local access and an active supported Roccat HID device; the race can corrupt kernel memory or interrupt the system.

CVSS severity7.8
High
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in Linux kernel roccat HID support allows local users to access freed reader memory by racing close with event delivery. roccat_report_event() traverses device->readers without readers_lock, while concurrent roccat_release() removes and frees an entry still in use. Reachability requires low-privilege local access and an active supported Roccat HID device; the race can corrupt kernel memory or interrupt the system.

The record

CVE
CVE-2026-43111
Published
May 6, 2026
Updated
May 6, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-416, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 6, 2026CVE publishedPublication date reported by the CVE source.
  2. May 6, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <36bb2d0b915014bbdc5044982b31b57b78045b93
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <bca0b595e15450dd66b1153c76c4ef1087ee011b
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d802d848308b35220f21a8025352f0c0aba15c12
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <e16a6d11bd77b81632165f02cf0d5946df74b3b7
  5. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <e6a445513fbc6a0329d2d5ff375b6725750ec5a6

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <36bb2d0b915014bbdc5044982b31b57b78045b93; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <bca0b595e15450dd66b1153c76c4ef1087ee011b; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d802d848308b35220f21a8025352f0c0aba15c12; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <e16a6d11bd77b81632165f02cf0d5946df74b3b7; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <e6a445513fbc6a0329d2d5ff375b6725750ec5a6

Published CVSS scores

5.5Oracle LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.8Linux CNACVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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