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).

Red Hat Enterprise Linux 10 Not affected kernel Red Hat Enterprise Linux 6 Not affected kernel Red Hat Enterprise Linux 7 Not affected kernel Red Hat Enterprise Linux 7 Not affected kernel-rt Red Hat Enterprise Linux 8 Not affected kernel Red Hat Enterprise Linux 8 Not affected kernel-rt Red Hat Enterprise Linux 9 Not affected kernel Red Hat Enterprise Linux 9 Not affected kernel-rt https://www.cve.org/CVERecord?id=CVE-2026-46142 https://nvd.nist.gov/vuln/detail/CVE-2026-46142 https://lore.kernel.org/linux-cve-announce/2026052820-CVE-2026-46142-52bf@gregkh/T