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debiancveDebian Security Bug TrackerDEBIANCVE:CVE-2023-47233
HistoryNov 03, 2023 - 9:15 p.m.

CVE-2023-47233

2023-11-0321:15:17
Debian Security Bug Tracker
security-tracker.debian.org
20
cve-2023-47233
brcm80211 component
linux kernel
use-after-free
device unplugging
usb hotplug
physically proximate attackers
local access
real world scenario
escan timeout worker
broadcom.

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

6.3 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

5.1%

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.

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

6.3 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

5.1%