Linux Kernel EUVD-2026-35163

The libwx module is the Linux kernel driver for Wangxun (WX-series) network adapters. The bug resides in how VF (SR-IOV Virtual Function) misc interrupt handlers are registered. The kernel interrupt management API mandates that IRQF_ONESHOT - which defers re-enabling the interrupt line until the threaded handler completes - must only be paired with a non-NULL threaded handler. Using request_threaded_irq() with a real primary handler, a NULL thread_fn, and IRQF_ONESHOT was made explicitly illegal by commit aef30c8d569c ('genirq: Warn about using IRQF_ONESHOT without a threaded handler'), which emits a WARN_ON at kernel/irq/manage.c:1502. The correct fix is request_irq(), the standard synchronous interrupt registration call, with IRQF_ONESHOT removed. No CWE is assigned in the input data; the root cause is best classified as improper use of a kernel API (analogous to CWE-628: Function Call with Incorrectly Specified Arguments).