Linux Kernel up to 6.3.3 wifi n_channels uninitialized pointer

CVSS Meta Temp Score
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CTI Interest Score
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6.6$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 5.4.243/5.10.180/5.15.112/6.1.29/6.3.3. It has been rated as critical. Impacted is the function n_channels of the component wifi. This manipulation causes uninitialized pointer. This vulnerability is registered as CVE-2023-53589. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability has been found in Linux Kernel up to 5.4.243/5.10.180/5.15.112/6.1.29/6.3.3 and classified as critical. Affected by this vulnerability is the function n_channels of the component wifi. The manipulation with an unknown input leads to a uninitialized pointer vulnerability. The CWE definition for the vulnerability is CWE-824. The product accesses or uses a pointer that has not been initialized. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: mvm: don't trust firmware n_channels If the firmware sends us a corrupted MCC response with n_channels much larger than the command response can be, we might copy far too much (uninitialized) memory and even crash if the n_channels is large enough to make it run out of the one page allocated for the FW response. Fix that by checking the lengths. Doing a < comparison would be sufficient, but the firmware should be doing it correctly, so check more strictly.

The advisory is shared at git.kernel.org. This vulnerability is known as CVE-2023-53589 since 10/04/2025. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 04/27/2026).

The vulnerability scanner Nessus provides a plugin with the ID 276910 (SUSE SLES12 Security Update : kernel (SUSE-SU-2025:4189-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.4.244, 5.10.181, 5.15.113, 6.1.30 or 6.3.4 eliminates this vulnerability. Applying the patch e519a404a5bbba37693cb10fa61794a5fce4fd9b/d0d39bed9e95f27a246be91c5929254ac043ed30/05ad5a4d421ce65652fcb24d46b7e273130240d6/557ba100d8cf3661ff8d71c0b4a2cba8db555ec2/c176f03350954b795322de0bfe1d7b514db41f45/682b6dc29d98e857e6ca4bbc077c7dc2899b7473 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 (276910), EUVD (EUVD-2023-60019) and CERT Bund (WID-SEC-2025-2194). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Affected

  • Google Container-Optimized OS
  • Debian Linux
  • Google Cloud Platform
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • SUSE openSUSE
  • Open Source Linux Kernel
  • RESF Rocky Linux
  • NetApp ActiveIQ Unified Manager
  • IBM QRadar SIEM
  • Dell NetWorker

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.6

VulDB Base Score: 8.0
VulDB Temp Score: 7.6
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: Uninitialized pointer
CWE: CWE-824 / CWE-908
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: 276910
Nessus Name: SUSE SLES12 Security Update : kernel (SUSE-SU-2025:4189-1)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 5.4.244/5.10.181/5.15.113/6.1.30/6.3.4
Patch: e519a404a5bbba37693cb10fa61794a5fce4fd9b/d0d39bed9e95f27a246be91c5929254ac043ed30/05ad5a4d421ce65652fcb24d46b7e273130240d6/557ba100d8cf3661ff8d71c0b4a2cba8db555ec2/c176f03350954b795322de0bfe1d7b514db41f45/682b6dc29d98e857e6ca4bbc077c7dc2899b7473

Timelineinfo

10/04/2025 Advisory disclosed
10/04/2025 +0 days CVE reserved
10/04/2025 +0 days VulDB entry created
04/27/2026 +205 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2023-53589 (🔒)
GCVE (CVE): GCVE-0-2023-53589
GCVE (VulDB): GCVE-100-327145
EUVD: 🔒
CERT Bund: WID-SEC-2025-2194 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 10/04/2025 20:23
Updated: 04/27/2026 18:37
Changes: 10/04/2025 20:23 (59), 10/04/2025 22:28 (1), 11/23/2025 22:40 (7), 11/27/2025 21:08 (2), 12/26/2025 20:50 (1), 02/10/2026 01:39 (11), 04/27/2026 18:37 (1)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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