Linux Kernel up to 6.5.2 wifi mwifiex_handle_uap_rx_forward null pointer dereference

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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Linux Kernel up to 6.5.2. Impacted is the function mwifiex_handle_uap_rx_forward of the component wifi. Performing a manipulation results in null pointer dereference. This vulnerability is cataloged as CVE-2023-53384. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.5.2. It has been classified as critical. This affects the function mwifiex_handle_uap_rx_forward of the component wifi. The manipulation with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. This is going to have an impact on availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: wifi: mwifiex: avoid possible NULL skb pointer dereference In 'mwifiex_handle_uap_rx_forward()', always check the value returned by 'skb_copy()' to avoid potential NULL pointer dereference in 'mwifiex_uap_queue_bridged_pkt()', and drop original skb in case of copying failure. Found by Linux Verification Center (linuxtesting.org) with SVACE.

It is possible to read the advisory at git.kernel.org. This vulnerability is uniquely identified as CVE-2023-53384 since 09/17/2025. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 265542 (Linux Distros Unpatched Vulnerability : CVE-2023-53384), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 4.14.326, 4.19.295, 5.4.257, 5.10.195, 5.15.132, 6.1.53, 6.4.16 or 6.5.3 eliminates this vulnerability. Applying the patch d155c5f64cefacdc6a9a26d40be53ee2903c28ff/139d285e7695279f030dbb172e2d0245425c86c6/231086e6a36316b823654f4535653f22d6344420/bef85d58f7709896ed8426560ad117a73a37762f/d7fd24b8d1bb54c5bcf583139e11a5e651e0263c/7e7197e4d6a1bc72a774590d8765909f898be1dc/0c57f9ad2c3ed43abb764b0247d610ff7fdb7a00/c2509f7c37355e1f0bd5b7087815b845fd383723/35a7a1ce7c7d61664ee54f5239a1f120ab95a87e is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (265542) and CERT Bund (WID-SEC-2025-2092). Be aware that VulDB is the high quality source for vulnerability data.

Affected

  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • SUSE Linux
  • Oracle Linux
  • SUSE openSUSE
  • RESF Rocky Linux
  • Open Source Linux Kernel
  • Dell Secure Connect Gateway
  • IBM QRadar SIEM

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.5

VulDB Base Score: 5.7
VulDB Temp Score: 5.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 265542
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2023-53384

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 4.14.326/4.19.295/5.4.257/5.10.195/5.15.132/6.1.53/6.4.16/6.5.3
Patch: d155c5f64cefacdc6a9a26d40be53ee2903c28ff/139d285e7695279f030dbb172e2d0245425c86c6/231086e6a36316b823654f4535653f22d6344420/bef85d58f7709896ed8426560ad117a73a37762f/d7fd24b8d1bb54c5bcf583139e11a5e651e0263c/7e7197e4d6a1bc72a774590d8765909f898be1dc/0c57f9ad2c3ed43abb764b0247d610ff7fdb7a00/c2509f7c37355e1f0bd5b7087815b845fd383723/35a7a1ce7c7d61664ee54f5239a1f120ab95a87e

Timelineinfo

09/17/2025 CVE reserved
09/18/2025 +1 days Advisory disclosed
09/18/2025 +0 days VulDB entry created
12/11/2025 +84 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2023-53384 (🔒)
GCVE (CVE): GCVE-0-2023-53384
GCVE (VulDB): GCVE-100-324879
CERT Bund: WID-SEC-2025-2092 - Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service

Entryinfo

Created: 09/18/2025 16:37
Updated: 12/11/2025 21:47
Changes: 09/18/2025 16:37 (59), 09/20/2025 12:33 (7), 09/22/2025 01:46 (2), 11/29/2025 16:14 (1), 12/11/2025 21:47 (10)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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