CVE-2026-98356: RDMA/bnxt_re: check create_singlethread_workqueue() in DCB setup
In the Linux kernel, the following vulnerability has been resolved:
RDMA/bnxtre: check createsinglethreadworkqueue() in DCB setup
bnxtreinitdcbwq() ignores a failed allocation. The async DCB handler later calls queuework() on the NULL pointer.
Affected Software
Event History
Frequently Asked Questions
When can this issue be triggered?
It requires failure of the workqueue allocation during bnxt_re DCB setup, followed by execution of the asynchronous DCB handler. The handler can then call queue_work() with a NULL workqueue pointer.
Which systems are exposed?
Systems using the Linux kernel RDMA bnxt_re driver and exercising its DCB setup and asynchronous DCB handling are relevant. The provided data does not identify affected kernel versions or whether this path is enabled by default.
How can administrators tell whether they may be affected?
Review whether the bnxt_re RDMA driver is in use and whether DCB is configured or used with it. The supplied information does not provide a specific log signature, crash signature, or detection command.