What is CVE-2023-47233?

CVE-2023-47233 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.3 out of 10, classified as a Use After Free flaw (CWE-416). CVE-2023-47233 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-47233?

CVE-2023-47233 has a CVSS score of 4.3 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2023-47233?

No patch is currently available for CVE-2023-47233. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2023-47233 actively exploited?

CVE-2023-47233 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Use After Free (CWE-416)?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/416.html

CVE-2023-47233

Medium

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.

Package Linux Kernel

Published 2023-11-03

Last modified 2026-05-12

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

4.3

out of 10

Medium

Attack Vector

Physical

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

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

Weakness type

CWE-416

CVE-2023-47233 is a Use After Free vulnerability

What is Use After Free?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2023-47233 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

SUSE
https://bugzilla.suse.com/show_bug.cgi?id=1216702

Issue Tracking Third Party Advisory
Debian Security
https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
Debian Security
https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
Cert-Portal
https://cert-portal.siemens.com/productcert/html/ssa-265688.html
Kernel patch commit
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0f7352557a35ab7888bc7831411ec8a3cbe20d78
Patch
Kernel patch commit
https://lore.kernel.org/all/20231104054709.716585-1-zyytlz.wz%40163.com/
Patch
Kernel patch commit
https://marc.info/?l=linux-kernel&m=169907678011243&w=2
Patch

Details

CVE ID CVE-2023-47233

Severity Medium

CVSS score 4.3 / 10

CVSS version 3.1

Published 2023-11-03

Modified 2026-05-12

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2023-47233?

CVE-2023-47233 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.3 out of 10 , classified as an Use After Free flaw (CWE-416) . CVE-2023-47233 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-47233?

CVE-2023-47233 has a CVSS score of 4.3 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2023-47233?

No patch is currently available for CVE-2023-47233. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2023-47233 actively exploited?

No — CVE-2023-47233 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Use After Free (CWE-416)?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. View CWE-416 on MITRE CWE →