Use After Free in Linux

CVE-2026-43440

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 clean…

Vulnerability class: Use-After-Free

EPSS: 0.000 (2.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

  • Linux — versions fa3c2f8d9152344a478abb847081c1b5f84a94f5, a9a7c3203fdc4d4a8d8a7a3b1ed05d2bb4c6e77e, f975a0955276579e2176a134366ed586071c7c6a
  • Linux Linux_kernel — versions 7.0

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-43440?
CVE-2026-43440 is a high-severity vulnerability in Linux, classified under Use After Free. CVSS score: 7.8/10. Published 2026-05-08.
How severe is CVE-2026-43440?
High severity. CVSS v3 base score is 7.8 out of 10.