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  4. CVE 2026 43440 netmana null servicewq on setup error to prevent
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Back to active CVEs
Unknown severity · Source severity not reportedCVE-2026-43440

net/mana: Null service_wq on setup error to prevent double destroyCVE-2026-43440

Answer in brief

CVE-2026-43440 records a Unknown severity vulnerability in net/mana: Null service_wq on setup error to prevent double destroy. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published May 8, 2026Updated Nov 6, 2026Source checked Nov 6, 2026First seen by HOL Nov 6, 2026Material review Nov 6, 2026
Upstream Advisory

Key facts

Risk
Unknown severitySource severity not reported
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Linux/Linuxgeneric>=fa3c2f8d9152344a478abb847081c1b5f84a94f5 <59489ce60d7412ed82fb1d8002faa3102dcd4916 || >=a9a7c3203fdc4d4a8d8a7a3b1ed05d2bb4c6e77e <6c92392602b451e3869f15ab685f8f650e942b13 || >=f975a0955276579e2176a134366ed586071c7c6a <87c2302813abc55c46485711a678e3c312b0066659489ce60d7412ed82fb1d8002faa3102dcd4916, 6c92392602b451e3869f15ab685f8f650e942b13, 87c2302813abc55c46485711a678e3c312b00666
Linux/Linuxgeneric>=6.18.16 <6.18.19 || >=6.19.6 <6.19.96.18.19, 6.19.9

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
  2. 2Review the reported fix. Update Linux/Linux to 59489ce60d7412ed82fb1d8002faa3102dcd4916; Linux/Linux to 6.18.19 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    May 8, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 6, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Nov 6, 2026

Sources and claim methodology

  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
Upstream source description

In the Linux kernel, the following vulnerability has been resolved: net/mana: Null service_wq on setup error to prevent double destroy In mana_gd_setup() error path, set gc->service_wq to NULL after destroy_workqueue() to match the cleanup in mana_gd_cleanup(). This prevents a use-after-free if the workqueue pointer is checked after a failed setup.

Quoted source text, attributed separately from HOL analysis.

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
Not reported
Source
CVE List V5
Source checked
Nov 6, 2026
References
3 linked sources
Open source record