---
id: CVE-2025-40282
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  Bluetooth: 6lowpan: reset link-local header on ipv6 recv path

  Bluetooth 6lowpan.c netdev has header_ops, so it must set link-local
  header for RX skb, otherwise things …
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  Bluetooth: 6lowpan: reset link-local header on ipv6 recv path

  Bluetooth 6lowpan.c netdev has header_ops, so it must set link-local
  header for RX skb, otherwise things …
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
published: '2025-12-06'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T19:10:00.173'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-40282'
references:
  - url: 'https://git.kernel.org/stable/c/11cd7e068381666f842ad41d1cc58eecd0c75237'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/3b78f50918276ab28fb22eac9aa49401ac436a3b'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/4ebb90c3c309e6375dc3e841af92e2a039843e62'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/70d84e7c3a44b81020a3c3d650a64c63593405bd'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/973e0271754c77db3e1b6b69adf2de85a79a4c8b'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/c24ac6cfe4f9a47180a65592c47e7a310d2f9d93'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/d566e9a2bfc848941b091ffd5f4e12c4e889d818'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ea46a1d217bc82e01cf3d0424e50ebfe251e34bf'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
epss: 0.0028
epssPercentile: 0.19003
ingestedAt: '2026-10-15T19:25:46.334Z'
---

## Overview

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

Bluetooth: 6lowpan: reset link-local header on ipv6 recv path

Bluetooth 6lowpan.c netdev has header_ops, so it must set link-local
header for RX skb, otherwise things crash, eg. with AF_PACKET SOCK_RAW

Add missing skb_reset_mac_header() for uncompressed ipv6 RX path.

For the compressed one, it is done in lowpan_header_decompress().

Log: (BlueZ 6lowpan-tester Client Recv Raw - Success)
------
kernel BUG at net/core/skbuff.c:212!
Call Trace:
<IRQ>
...
packet_rcv (net/packet/af_packet.c:2152)
...
<TASK>
__local_bh_enable_ip (kernel/softirq.c:407)
netif_rx (net/core/dev.c:5648)
chan_recv_cb (net/bluetooth/6lowpan.c:294 net/bluetooth/6lowpan.c:359)
------

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.