CVE-2026-43440

HIGHNVD 7.8

7.8

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.

CVSS v3: 7.8
EG Score: 0.0(none)
EPSS: 2.3%
KEV: Not listed

Published

May 8, 2026

Last Modified

May 21, 2026

References (3)

416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/59489ce60d7412ed82fb1d8002faa3102dcd4916
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6c92392602b451e3869f15ab685f8f650e942b13
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/87c2302813abc55c46485711a678e3c312b00666

Vendor Advisories for CVE-2026-43440(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

GHSA-25hr-298p-f2jg
GitHub Security AdvisoriesHigh
In the Linux kernel, the following vulnerability has been resolved: net/mana: Null service_wq on...

Frequently asked(5)

What is CVE-2026-43440?

CVE-2026-43440 is a high vulnerability published on May 8, 2026. In the Linux kernel, the following vulnerability has been resolved: net/mana: Null service_wq on setup error to prevent double destroy In managdsetup() error path, set gc->service_wq to NULL after destroyworkqueue() to match the cleanup in managd_cleanup(). This prevents a use-after-free if the…

When was CVE-2026-43440 disclosed?

CVE-2026-43440 was first published in the National Vulnerability Database on May 8, 2026, with the most recent update on May 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-43440 actively exploited?

CVE-2026-43440 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2026-43440?

CVE-2026-43440 has a CVSS v3 base score of 7.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 0.0.

How do I remediate CVE-2026-43440?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-43440, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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CVE-2026-43440

📅 Published

🔄 Last Modified

🔗 References (3)

📣 Vendor Advisories for CVE-2026-43440(1)

❓ Frequently asked(5)