CVE-2023-47233

2023-11-0321:15:17

CWE-416

[email protected]

web.nvd.nist.gov

linux kernel

use-after-free

brcm80211

device unplugging

usb

hotplug

physically proximate attackers

real world scenario

brcmf_cfg80211_escan_timeout_worker

4.3 Medium

CVSS3

Attack Vector

PHYSICAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

5.2 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

5.1%

JSON

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.