CVE-2025-39769

/// Technical description

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

bnxt_en: Fix lockdep warning during rmmod

The commit under the Fixes tag added a netdev_assert_locked() in

bnxt_free_ntp_fltrs(). The lock should be held during normal run-time

but the assert will be triggered (see below) during bnxt_remove_one()

which should not need the lock. The netdev is already unregistered by

then. Fix it by calling netdev_assert_locked_or_invisible() which will

not assert if the netdev is unregistered.

WARNING: CPU: 5 PID: 2241 at ./include/net/netdev_lock.h:17 bnxt_free_ntp_fltrs+0xf8/0x100 [bnxt_en]

Modules linked in: rpcrdma rdma_cm iw_cm ib_cm configfs ib_core bnxt_en(-) bridge stp llc x86_pkg_temp_thermal xfs tg3 [last unloaded: bnxt_re]

CPU: 5 UID: 0 PID: 2241 Comm: rmmod Tainted: G S W 6.16.0 #2 PREEMPT(voluntary)

Tainted: [S]=CPU_OUT_OF_SPEC, [W]=WARN

Hardware name: Dell Inc. PowerEdge R730/072T6D, BIOS 2.4.3 01/17/2017

RIP: 0010:bnxt_free_ntp_fltrs+0xf8/0x100 [bnxt_

/// 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