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Linux Distros Unpatched Vulnerability : CVE-2026-23041

critical Nessus Plugin ID 297940

Synopsis

The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be patched.

Description

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

 - bnxt_en: Fix NULL pointer crash in bnxt_ptp_enable during error cleanup When bnxt_init_one() fails during initialization (e.g., bnxt_init_int_mode returns -ENODEV), the error path calls bnxt_free_hwrm_resources() which destroys the DMA pool and sets bp->hwrm_dma_pool to NULL. Subsequently, bnxt_ptp_clear() is called, which invokes ptp_clock_unregister(). Since commit a60fc3294a37 (ptp: rework ptp_clock_unregister() to disable events), ptp_clock_unregister() now calls ptp_disable_all_events(), which in turn invokes the driver's .enable() callback (bnxt_ptp_enable()) to disable PTP events before completing the unregistration. bnxt_ptp_enable() attempts to send HWRM commands via bnxt_ptp_cfg_pin() and bnxt_ptp_cfg_event(), both of which call hwrm_req_init(). This function tries to allocate from bp->hwrm_dma_pool, causing a NULL pointer dereference: bnxt_en 0000:01:00.0 (unnamed net_device) (uninitialized): bnxt_init_int_mode err: ffffffed KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f] Call Trace: __hwrm_req_init (drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.c:72) bnxt_ptp_enable (drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c:323 drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c:517) ptp_disable_all_events (drivers/ptp/ptp_chardev.c:66) ptp_clock_unregister (drivers/ptp/ptp_clock.c:518) bnxt_ptp_clear (drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c:1134) bnxt_init_one (drivers/net/ethernet/broadcom/bnxt/bnxt.c:16889) Lines are against commit f8f9c1f4d0c7 (Linux 6.19-rc3) Fix this by clearing and unregistering ptp (bnxt_ptp_clear()) before freeing HWRM resources.
 (CVE-2026-23041)

Note that Nessus relies on the presence of the package as reported by the vendor.

Solution

There is no known solution at this time.

See Also

https://security-tracker.debian.org/tracker/CVE-2026-23041

Plugin Details

Severity: Critical

ID: 297940

File Name: unpatched_CVE_2026_23041.nasl

Version: 1.1

Type: local

Agent: unix

Family: Misc.

Published: 2/4/2026

Updated: 2/4/2026

Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS Score Source: CVE-2026-23041

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 9

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:U/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:linux, cpe:/o:debian:debian_linux:14.0

Required KB Items: Host/cpu, Host/local_checks_enabled, global_settings/vendor_unpatched, Host/OS/identifier

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 2/4/2026

Reference Information

CVE: CVE-2026-23041