What is CVE-2026-43084?

CVE-2026-43084 is a high-severity vulnerability in Linux, classified under Use After Free. CVSS score: 7.8/10. Published 2026-05-06.

How severe is CVE-2026-43084?

High severity. CVSS v3 base score is 7.8 out of 10.

Use After Free in Linux

CVE-2026-43084

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfnetlink_queue: make hash table per queue Sharing a global hash table among all queues is tempting, but it can cause crash: BUG: KASAN: slab-use-after-free…

Vulnerability class: Use-After-Free

EPSS: 0.000 (2.4th 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 371de2bef6582a3f58049b3d18e190924af9c9a0, 870e3e63da8e88daffe9d692a025c711658018a8, 70e2e3ce4f6841e12ec1c104fc76c0e707398ec4
Linux Linux_kernel

Weakness classification (CWE)

CWE-416 — Use After Free

References

416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)

Frequently asked questions

What is CVE-2026-43084?: CVE-2026-43084 is a high-severity vulnerability in Linux, classified under Use After Free. CVSS score: 7.8/10. Published 2026-05-06.
How severe is CVE-2026-43084?: High severity. CVSS v3 base score is 7.8 out of 10.