CVE-2026-98356 RDMA/bnxt_re: check create_singlethread_workqueue() in DCB setup

Not scored Published 6 Oct 2026 Updated 19 Oct 2026

A missing null check in the Linux kernel RDMA driver causes a crash when workqueue allocation fails, leading to denial of service.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: Not needed
Fix: Available

What is CVE-2026-98356?

CVE-2026-98356 is a vulnerability in Linux, published on 6 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In the Linux kernel, the following vulnerability has been resolved:

RDMA/bnxt_re: check create_singlethread_workqueue() in DCB setup

bnxt_re_init_dcb_wq() ignores a failed allocation. The async DCB handler later calls queue_work() on the NULL pointer.

Which versions are affected by CVE-2026-98356?

How do I fix CVE-2026-98356?

Apply the vendor's patch.

Is CVE-2026-98356 being exploited?

There is no known exploitation of CVE-2026-98356 in the wild and no public exploit code.

Sources

Also known as BELL-CVE-2026-98356, DEBIAN-CVE-2026-98356, GHSA-9ccg-hmmr-m95r, UBUNTU-CVE-2026-98356.