---
id: CVE-2026-98290
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  Bluetooth: RFCOMM: avoid socket lock inversion in listener cleanup

  rfcomm_sock_cleanup_listen() closes unaccepted child sockets through
  rfcomm_sock_close(), which take…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  Bluetooth: RFCOMM: avoid socket lock inversion in listener cleanup

  rfcomm_sock_cleanup_listen() closes unaccepted child sockets through
  rfcomm_sock_close(), which take…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= b7ce436a5d798bc59e71797952566608a4b4626b <
    eb4adaa46e4c9e6efa7be3ce06398f4d7c39b57c
  - >-
    Linux >= b7ce436a5d798bc59e71797952566608a4b4626b <
    4aafb47301a799d3e01230d6568c4e93524e1523
  - >-
    Linux >= b7ce436a5d798bc59e71797952566608a4b4626b <
    c741977e413f5b49d306700820fb55ccb8269f5a
  - >-
    Linux >= b7ce436a5d798bc59e71797952566608a4b4626b <
    c6792c441767256030606eb82dca5d5fc360dd9a
  - >-
    Linux >= b7ce436a5d798bc59e71797952566608a4b4626b <
    bfce253f039eb5f58b810af267942a9f59207254
  - >-
    Linux >= b7ce436a5d798bc59e71797952566608a4b4626b <
    18174b166547ef41973cc19feb5ef9cab39a8def
  - >-
    Linux >= b7ce436a5d798bc59e71797952566608a4b4626b <
    801fb950cae7048eb7d83b18857d1ca37b8cd5a4
  - Linux 5.15
published: '2026-10-06'
updated: '2026-10-06'
sourceUpdated: '2026-10-06T09:18:19.317'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-98290'
references:
  - url: 'https://git.kernel.org/stable/c/18174b166547ef41973cc19feb5ef9cab39a8def'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/4aafb47301a799d3e01230d6568c4e93524e1523'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/801fb950cae7048eb7d83b18857d1ca37b8cd5a4'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/bfce253f039eb5f58b810af267942a9f59207254'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/c6792c441767256030606eb82dca5d5fc360dd9a'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/c741977e413f5b49d306700820fb55ccb8269f5a'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/eb4adaa46e4c9e6efa7be3ce06398f4d7c39b57c'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-06T08:50:17.417Z'
---

## Overview

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

Bluetooth: RFCOMM: avoid socket lock inversion in listener cleanup

rfcomm_sock_cleanup_listen() closes unaccepted child sockets through
rfcomm_sock_close(), which takes the child socket lock before
rfcomm_dlc_close() acquires rfcomm_mutex. The RFCOMM worker takes these
locks in reverse order while handling connections and DLC state changes,
so lockdep reports a possible deadlock.

Close dequeued children without taking their socket lock. The accept queue
owns a reference to each child, and bt_accept_dequeue() locks the child
while unlinking it and clearing its parent pointer.

Dropping the child lock makes it important to prevent a concurrent
rfcomm_connect_ind() from enqueueing a new child after cleanup observes an
empty queue. Set a listening socket to BT_CLOSED while its lock is still
held, before dropping the lock and draining the queue. The state check in
rfcomm_connect_ind() then rejects new children once cleanup starts.

## Remediation

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