dbcve.org
Linux KernelOperating system · Linux

CVE-2026-43150

HIGH · 7.8 CVSS v3.1 Published 2026-05-06
Fix available
A fix is available. Upgrade to 6.1.165 / 6.6.128 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: perf/arm-cmn: Reject unsupported hardware configurations So far we've been fairly lax about accepting both unknown CMN models (at least with a warning), and unknown revisions of those which we do know, as although things do frequently change between releases, typically enough remains the same to be somewhat useful for at least some basic bringup checks. However, we also make assumptions of the maximum supported sizes and numbers of things in various places, and there's no guarantee that something new might not be bigger and lead to nasty array overflows. Make sure we only try to run on things that actually match our assumptions and so will not risk memory corruption. We have at least always failed on completely unknown node types, so update that error message for clarity and consistency too.

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-787

The program writes past the bounds of a buffer, overwriting adjacent memory an attacker can turn to their advantage. Crafted input can overwrite control data and redirect execution. Remediation is validating every index and length before a write, plus modern memory-safety mitigations.

General guidance for the out-of-bounds write 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:>= 6.1.63, < 6.1.165>= 6.5, < 6.6.128>= 6.7, < 6.12.75>= 6.13, < 6.18.16>= 6.19, < 6.19.6

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 6.1.165 / 6.6.128 / 6.12.75 or later
Fixed in 6.1.1656.6.1286.12.75
Vendor patch git.kernel.org →
Recommended fix High confidence

Upgrade to the latest stable kernel version: 6.1.165+, 6.6.128+, 6.12.75+, or 6.18.16+ depending on your current branch; otherwise use the latest stable release (6.13.x or higher recommended)

  1. 1. Identify the currently running Linux kernel version using `uname -r`
  2. 2. Determine which kernel branch you're currently running (e.g., 6.1.x, 6.5.x, 6.6.x, 6.7.x, 6.12.x, 6.13.x)
  3. 3. For kernel 6.1.x: Upgrade to kernel version 6.1.165 or later
  4. 4. For kernel 6.5.x or 6.6.x: Upgrade to kernel version 6.6.128 or later
  5. 5. For kernel 6.7.x through 6.11.x: Upgrade to kernel version 6.12.75 or later
  6. 6. For kernel 6.13.x through 6.17.x: Upgrade to kernel version 6.18.16 or later
  7. 7. For kernel 6.18.x or later: Verify you are on the latest stable release which should include the fix
  8. 8. Use your distribution's package manager to install the updated kernel (e.g., `apt-get update && apt-get install linux-image-*` for Debian/Ubuntu, or `yum update kernel` for RHEL/CentOS)
Caveat Kernel upgrades may require rebuilding third-party kernel modules; ensure compatibility of proprietary drivers with the new kernel version before upgrading in production environments

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

Free · runs locally
dbcve dependency scanner

Check whether your project pulls in CVE-2026-43150 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.

Get it on GitHub Scan in the browser

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-2026-43150 in production — separate from our analysis above.

No notes yet

Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.

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