CVE-2026-46142: Linux Kernel

Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days.

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).

Affected products

• Linux Linux Kernel: from 6.6.117, before 6.6.140 (fixed in 6.6.140); from 6.12.58, before 6.12.88 (fixed in 6.12.88); from 6.17.8, before 6.18 (fixed in 6.18); from 6.18.1, before 6.18.30 (fixed in 6.18.30); from 6.19, before 7.0.7 (fixed in 7.0.7); version 6.18 only; …

Published 2026-05-28. Last modified 2026-06-24.