Skip to main content
VulnerabilityPublished Updated

CVE-2026-43440: Linux kernel · net/mana: Null service_wq on setup error to prevent double destroy

Affects Linux kernelSource CVE Database V5

0
Compare

Not known to be exploited · fixed in 59489ce60d7412ed82fb1d8002faa3102dcd4916 : update Linux kernel when convenient.

Data as of 6 Nov 2026, 16:04 UTC

Severity
Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none
CISA SSVC
Exploitation
No evidence of active exploitation and no public proof of concept
Automatable
Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact
Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-06.

Patch
Available – fixed in 59489ce60d7412ed82fb1d8002faa3102dcd4916, 87c2302813abc55c46485711a678e3c312b00666, 6c92392602b451e3869f15ab685f8f650e942b13 +2

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 8 May 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 6 Nov 2026.

What to do

Upgrade Linux to 59489ce60d7412ed82fb1d8002faa3102dcd4916, 87c2302813abc55c46485711a678e3c312b00666 or 6c92392602b451e3869f15ab685f8f650e942b13; Linux to 6.19.9 or 6.18.19.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ fa3c2f8d9152344a478abb847081c1b5f84a94f5, < 59489ce60d7412ed82fb1d8002faa3102dcd4916
Fixed in
  • 59489ce60d7412ed82fb1d8002faa3102dcd4916
LinuxLinuxAffected
  • ≥ f975a0955276579e2176a134366ed586071c7c6a, < 87c2302813abc55c46485711a678e3c312b00666
Fixed in
  • 87c2302813abc55c46485711a678e3c312b00666
LinuxLinuxAffected
  • ≥ a9a7c3203fdc4d4a8d8a7a3b1ed05d2bb4c6e77e, < 6c92392602b451e3869f15ab685f8f650e942b13
Fixed in
  • 6c92392602b451e3869f15ab685f8f650e942b13
LinuxLinuxAffected
  • >=6.19.6 <6.19.9
Fixed in
  • 6.19.9
LinuxLinuxAffected
  • >=6.18.16 <6.18.19
Fixed in
  • 6.18.19

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.

References

Community reviews

Loading reviews…