VDB-330280 · CVE-2025-40075 · Nessus 271888

Linux Kernel up to 6.17.2 tcp_metrics dst_dev_net_rcu privilege escalation

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5.3	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 6.17.2. It has been declared as critical. Impacted is the function dst_dev_net_rcu of the component tcp_metrics. Executing a manipulation can lead to an unknown weakness. This vulnerability is registered as CVE-2025-40075. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.17.2. It has been declared as critical. This vulnerability affects the function dst_dev_net_rcu of the component tcp_metrics. The impact remains unknown. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: tcp_metrics: use dst_dev_net_rcu() Replace three dst_dev() with a lockdep enabled helper.

The advisory is shared for download at git.kernel.org. This vulnerability was named CVE-2025-40075 since 04/16/2025. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 271888 (Linux Distros Unpatched Vulnerability : CVE-2025-40075), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.17.3 or 6.18-rc1 eliminates this vulnerability. Applying the patch 07613a95326ebad2d1b88d883cd72546025a4f3e/50c127a69cd6285300931853b352a1918cfa180f 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 (271888) and CERT Bund (WID-SEC-2025-2431). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

Google Container-Optimized OS
Debian Linux
Amazon Linux 2
Red Hat Enterprise Linux
Ubuntu Linux
SUSE Linux
Oracle Linux
SUSE openSUSE
Open Source Linux Kernel
RESF Rocky Linux
Microsoft Azure
Dell NetWorker

Productinfo

Type

Operating System

Vendor

Linux

Name

Kernel

Version

License

open-source

Website

Vendor: https://www.kernel.org/

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

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Privilege escalation
CWE: Unknown
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 271888
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-40075

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.17.3/6.18-rc1
Patch: 07613a95326ebad2d1b88d883cd72546025a4f3e/50c127a69cd6285300931853b352a1918cfa180f

Timelineinfo

04/16/2025 CVE reserved
10/28/2025 +195 days Advisory disclosed
10/28/2025 +0 days VulDB entry created
02/15/2026 +110 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2025-40075 (🔒)
GCVE (CVE): GCVE-0-2025-40075
GCVE (VulDB): GCVE-100-330280
CERT Bund: WID-SEC-2025-2431 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 10/28/2025 15:54
Updated: 02/15/2026 21:49
Changes: 10/28/2025 15:54 (58), 10/29/2025 11:55 (2), 10/30/2025 07:49 (7), 11/24/2025 23:11 (1), 12/22/2025 02:00 (1), 02/08/2026 18:58 (1), 02/15/2026 21:49 (1)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.