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🛡️ CVE-2023-47233 — linux-kernel

🟡 CVSS 4.3 — Medium ✅ No Known Exploit CWE-416 NVD
4.3
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

How this vulnerability can be exploited

This issue can be reached with physical access to the device, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

  • Attack vector: Physical — the attacker has to touch the device.
  • Attack complexity: Low — the attack works reliably, with no preparation.
  • Privileges required: Low — an ordinary user account is enough.
  • User interaction: None — nobody has to be tricked into anything.
  • Scope: Unchanged — the damage stays inside the vulnerable component.
  • Confidentiality impact: None.
  • Integrity impact: None.
  • Availability impact: High — total loss, or loss the attacker controls.

Weakness class

CVE-2023-47233 is classified as CWE-416: Use After Free. Memory is used after being released, so its contents may already belong to something else.

Affected software

CVE-2023-47233 is recorded against 1 package.

  • linux-kernel (fixed in 6.5.10)

Timeline and source

Published on 3 November 2023 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

bugzilla.suse.com
git.kernel.org
lists.debian.org
lists.debian.org
lore.kernel.org
marc.info
bugzilla.suse.com
git.kernel.org
lists.debian.org
lists.debian.org
lore.kernel.org
marc.info
cert-portal.siemens.com

Other advisories for this package

linux-kernel has other advisories on record. If you are patching this one, these are worth checking on the same host:

Same weakness in other software

These advisories are the same class of weakness (CWE-416: Use After Free) in other software:

CVE-2023-47233 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity MEDIUM
CVSS Score 4.3
CVSS Vector CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE CWE-416
Public Exploit ✅ No
Source NVD
Published 2023-11-03
Updated 2026-08-20
Modified 2026-06-17

Affected Packages

Software From version Fixed in
linux-kernel — 6.5.10

References

Issue Tracking, Third Party Advisory https://bugzilla.suse.com/show_bug.cgi?id=1216702
Issue Tracking, Third Party Advisory https://bugzilla.suse.com/show_bug.cgi?id=1216702

Similar Threats

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ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.

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