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Vulnerability record · CVE-2026-43440 · published 8 May 2026

CVE-2026-43440: Linux kernel use after free vulnerability

Linux · Linux Kernel

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.

7.8 CVSS 3.1 High EPSS 0.17% · top 94.5% CWE-416 · Use after free
7.8CVSS 3.1 base score
0.17%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References
17 Jun 2026Last modified by NVD

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.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://git.kernel.org/stable/c/59489ce60d7412ed82fb1d8002faa3102dcd4916 Patch
https://git.kernel.org/stable/c/6c92392602b451e3869f15ab685f8f650e942b13 Patch
https://git.kernel.org/stable/c/87c2302813abc55c46485711a678e3c312b00666 Patch

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Source: NIST National Vulnerability Database (record CVE-2026-43440), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.