Linux Kernel up to 6.18.1 ns ns_list_node initialization

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in Linux Kernel up to 6.18.1. This impacts the function ns_list_node of the component ns. The manipulation leads to initialization. This vulnerability is uniquely identified as CVE-2025-68377. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.18.1. It has been rated as critical. This issue affects the function ns_list_node of the component ns. The manipulation with an unknown input leads to a initialization vulnerability. Using CWE to declare the problem leads to CWE-665. The product does not initialize or incorrectly initializes a resource, which might leave the resource in an unexpected state when it is accessed or used. The impact remains unknown. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: ns: initialize ns_list_node for initial namespaces Make sure that the list is always initialized for initial namespaces.

The advisory is shared at git.kernel.org. The identification of this vulnerability is CVE-2025-68377 since 12/16/2025. 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 12/27/2025).

The vulnerability scanner Nessus provides a plugin with the ID 280012 (Linux Distros Unpatched Vulnerability : CVE-2025-68377), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.18.2 or 6.19-rc1 eliminates this vulnerability. Applying the patch e31c902d785411eb4a246fba2e8a32aa59d33ce2/3dd50c58664e2684bd610a57bf3ab713cbb0ea91 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 (280012) and CERT Bund (WID-SEC-2025-2920). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Affected

  • Open Source Linux Kernel

Productinfo

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Name

Version

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Initialization
CWE: CWE-665
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 280012
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-68377

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.18.2/6.19-rc1
Patch: e31c902d785411eb4a246fba2e8a32aa59d33ce2/3dd50c58664e2684bd610a57bf3ab713cbb0ea91

Timelineinfo

12/16/2025 CVE reserved
12/24/2025 +8 days Advisory disclosed
12/24/2025 +0 days VulDB entry created
12/27/2025 +3 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2025-68377 (🔒)
GCVE (CVE): GCVE-0-2025-68377
GCVE (VulDB): GCVE-100-338237
CERT Bund: WID-SEC-2025-2920 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 12/24/2025 15:34
Updated: 12/27/2025 15:34
Changes: 12/24/2025 15:34 (59), 12/25/2025 20:30 (7), 12/27/2025 15:34 (2)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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