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Linux KernelOperating system · Linux

CVE-2026-43111

HIGH · 7.8 CVSS v3.1 Published 2026-05-06
Fix available
A fix is available. Upgrade to 6.6.136 / 6.12.83 or later.
See remediation →
80/100
Remediation priority · High
Zero-click Patch available

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
In the Linux kernel, the following vulnerability has been resolved: HID: roccat: fix use-after-free in roccat_report_event roccat_report_event() iterates over the device->readers list without holding the readers_lock. This allows a concurrent roccat_release() to remove and free a reader while it's still being accessed, leading to a use-after-free. Protect the readers list traversal with the readers_lock mutex.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis
How this class of weakness works · CWE-416

Memory is used after it has been freed, so its contents — now potentially attacker-controlled — drive the program's behaviour. With careful heap grooming this becomes code execution. The fix requires disciplined ownership of memory and often a targeted rework of the object lifecycle.

General guidance for the use after free class — the official description and references above are authoritative for this specific CVE. Want a bespoke review and a reviewed fix? Ask our team →

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Linux KernelOperating system
Affected:>= 2.6.35, < 6.6.136>= 6.7, < 6.12.83>= 6.13, < 6.18.24>= 6.19, < 6.19.14= 7.0

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 6.6.136 / 6.12.83 / 6.18.24 or later
Fixed in 6.6.1366.12.836.18.24
Vendor patch git.kernel.org →
Recommended fix High confidence

6.6.136, 6.12.83, 6.18.24, or 6.19.14 depending on kernel branch

  1. Identify the currently running Linux kernel version using `uname -r`
  2. Determine which kernel branch your version belongs to (e.g., 6.6.x, 6.7-6.12.x, 6.13-6.18.x, or 6.19.x)
  3. Upgrade the kernel to the appropriate fixed version for your branch: for 6.6.x series upgrade to 6.6.136 or later, for 6.7-6.12 series upgrade to 6.12.83 or later, for 6.13-6.18 series upgrade to 6.18.24 or later, for 6.19.x series upgrade to 6.19.14 or later
  4. Reboot the system to load the fixed kernel
  5. Verify the fix is applied by checking the kernel version matches the fixed release
Caveat Kernel upgrades may require reboot and could introduce compatibility changes with third-party modules; ensure dependent drivers/modules are compatible with the new version

Generated from the published advisory — verify against the referenced sources before acting.

We can perform the upgrade in your staging environment and verify nothing breaks — typical engagement from $3,200. Get the upgrade done

Scan for this in your stack

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-43111 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data