CVE-2026-46142

About vulnerability

In the Linux kernel, the following vulnerability has been resolved: net: libwx: fix VF illegal register access Register WX_CFG_PORT_ST is a PF restricted register. When a VF is initialized, attempting to read this register triggers an illegal register access, which lead to a system hang. When the device is VF, the bus function ID can be obtained directly from the PCI_FUNC(pdev->devfn). A flaw was found in the Linux kernel’s libwx network driver. When a Virtual Function (VF) is initialized, it attempts to read a Physical Function (PF) restricted register, WX_CFG_PORT_ST. This illegal register access can lead to a system hang, resulting in a Denial of Service (DoS).

Live-patch status from KernelCare for each operating system.