CVE-2025-38570

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

eth: fbnic: unlink NAPIs from queues on error to open

CI hit a UaF in fbnic in the AF_XDP portion of the queues.py test. The UaF is in the __sk_mark_napi_id_once() call in xsk_bind(), NAPI has been freed. Looks like the device failed to open earlier, and we lack clearing the NAPI pointer from the queue.

This vulnerability does not affect supported Red Hat Enterprise Linux releases because the fbnic network driver is not included in shipping Red Hat kernels. The flaw stems from improper cleanup during failed network device initialization, which can trigger a use-after-free condition during queue binding operations on systems equipped with specialized Meta network hardware. Because the affected driver code was introduced in upstream kernel releases newer than those maintained in Red Hat products, this issue presents no operational risk to Red Hat environments.