IM
IronMonkey Threat Research

CVE-2023-47233 MEDIUM

Published: 2023-11-03 | Last Modified: 2026-05-12 | Status: Modified

Description

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.

Additional Descriptions (1)

El componente brcm80211 en el kernel de Linux hasta 6.5.10 tiene un código brcmf_cfg80211_detach use after free en el código de desconexión del dispositivo (desconectar el USB mediante conexión en caliente). Para los atacantes físicamente próximos con acceso local, esto "podría explotarse en un escenario del mundo real". Esto está relacionado con brcmf_cfg80211_escan_timeout_worker en drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c.

CVSS Metrics

Base Score: 4.3 (MEDIUM)

CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack VectorPHYSICAL
Attack ComplexityLOW
Privileges RequiredLOW
User InteractionNONE
ScopeUNCHANGED
Confidentiality ImpactNONE
Integrity ImpactNONE
Availability ImpactHIGH

Source: [email protected]

Type: Primary

Exploitability Score: 0.7

Impact Score: 3.6

Weaknesses

Source Type Description
[email protected] Primary
en CWE-416
134c704f-9b21-4f2e-91b3-4a467353bcc0 Secondary
en CWE-416

Affected Products

Vendor Product Version Update Type
linux linux_kernel * <built-in method update of dict object at 0x7fd39c579340> Operating System

Affected Configurations

Operator: OR

Vulnerable CPE
Yes cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

References