CVE-2026-46287

/// Technical description

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

net: txgbe: fix RTNL assertion warning when remove module

For the copper NIC with external PHY, the driver called

phylink_connect_phy() during probe and phylink_disconnect_phy() during

remove. It caused an RTNL assertion warning in phylink_disconnect_phy()

upon module remove.

To fix this, add rtnl_lock() and rtnl_unlock() around the

phylink_disconnect_phy() in remove function.

------------[ cut here ]------------

RTNL: assertion failed at drivers/net/phy/phylink.c (2351)

WARNING: drivers/net/phy/phylink.c:2351 at

phylink_disconnect_phy+0xd8/0xf0 [phylink], CPU#0: rmmod/4464

Modules linked in: ...

CPU: 0 UID: 0 PID: 4464 Comm: rmmod Kdump: loaded Not tainted 7.0.0-rc4+

Hardware name: Micro-Star International Co., Ltd. MS-7E16/X670E GAMING

PLUS WIFI (MS-7E16), BIOS 1.90 12/31/2024

RIP: 0010:phylink_disconnect_phy+0xe4/0xf0 [phylink]

Code: 5b 41 5c 41 5d 41 5e 41 5f 5d 31 c0 31 d2 31 f6 31 ff e9 3a 38 8f e7

48

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References