What’s Vulnerable › Vulnerabilities

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

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-08 · updated 2026-06-17
• Weakness: CWE-416

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.

Affected products

• Linux kernel: from 6.18.16 before 6.18.19; from 6.19.6 before 6.19.9; 7.0-rc2, 7.0-rc3 — fixed in 6.18.19, 6.19.9

How to fix

Upgrade to a fixed version: Linux kernel 6.18.19, 6.19.9. Check the vendor advisory for mitigations.

References

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

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