---
id: CVE-2023-47233
title: >-
  The brcm80211 component in the Linux kernel through 6.5.10 has a
  brcmf_cfg80211_detach use-after-free in the device unplugging (disconnect the
  USB by hotplug) code
summary: >-
  The brcm80211 component in the Linux kernel through 6.5.10 has a
  brcmf_cfg80211_detach use-after-free in the device unplugging (disconnect the
  USB by hotplug) code. For physically proximate attackers with local access,
  this "could be exp…
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-416
vendor: linux
product: linux_kernel
affected:
  - linux_kernel <= 6.5.10
published: '2023-11-03'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T01:17:10.727'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2023-47233'
references:
  - url: 'https://bugzilla.suse.com/show_bug.cgi?id=1216702'
    label: cve@mitre.org
  - url: >-
      https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0f7352557a35ab7888bc7831411ec8a3cbe20d78
    label: cve@mitre.org
  - url: 'https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html'
    label: cve@mitre.org
  - url: 'https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html'
    label: cve@mitre.org
  - url: 'https://lore.kernel.org/all/20231104054709.716585-1-zyytlz.wz%40163.com/'
    label: cve@mitre.org
  - url: 'https://marc.info/?l=linux-kernel&m=169907678011243&w=2'
    label: cve@mitre.org
  - url: 'https://bugzilla.suse.com/show_bug.cgi?id=1216702'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0f7352557a35ab7888bc7831411ec8a3cbe20d78
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://lore.kernel.org/all/20231104054709.716585-1-zyytlz.wz%40163.com/'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://marc.info/?l=linux-kernel&m=169907678011243&w=2'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-265688.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
tags:
  - nvd
  - cve.org
epss: 0.00315
epssPercentile: 0.24312
ingestedAt: '2026-10-15T03:30:12.631Z'
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2025-03-06T15:54:23.860050Z'
---

## Overview

The brcm80211 component in the Linux kernel through 6.5.10 has a brcmf_cfg80211_detach use-after-free in the device unplugging (disconnect the USB by hotplug) code. For physically proximate attackers with local access, this "could be exploited in a real world scenario." This is related to brcmf_cfg80211_escan_timeout_worker in drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c.

## Affected

- `linux_kernel <= 6.5.10`

## Remediation

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