VDB-343600 · CVE-2025-71182 · EUVD-2025-206593

Linux Kernel up to 6.19-rc1 j1939_session_activate state issue

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4.9	$0-$5k	0.00

Summaryinfo

A vulnerability described as critical has been identified in Linux Kernel up to 6.19-rc1. This issue affects the function j1939_session_activate. Executing a manipulation can lead to state issue. This vulnerability is registered as CVE-2025-71182. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.19-rc1. It has been declared as critical. This vulnerability affects the function j1939_session_activate. The manipulation with an unknown input leads to a state issue vulnerability. The CWE definition for the vulnerability is CWE-371. The impact remains unknown. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: can: j1939: make j1939_session_activate() fail if device is no longer registered syzbot is still reporting unregister_netdevice: waiting for vcan0 to become free. Usage count = 2 even after commit 93a27b5891b8 ("can: j1939: add missing calls in NETDEV_UNREGISTER notification handler") was added. A debug printk() patch found that j1939_session_activate() can succeed even after j1939_cancel_active_session() from j1939_netdev_notify(NETDEV_UNREGISTER) has completed. Since j1939_cancel_active_session() is processed with the session list lock held, checking ndev->reg_state in j1939_session_activate() with the session list lock held can reliably close the race window.

The advisory is shared for download at git.kernel.org. This vulnerability was named CVE-2025-71182 since 01/31/2026. The exploitation appears to be difficult. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 03/26/2026).

The vulnerability scanner Nessus provides a plugin with the ID 297461 (Linux Distros Unpatched Vulnerability : CVE-2025-71182), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.10.248, 5.15.198, 6.1.161, 6.6.121, 6.12.66, 6.18.6 or 6.19-rc2 eliminates this vulnerability. Applying the patch ebb0dfd718dd31c8d3600612ca4b7207ec3d923a/c3a4316e3c746af415c0fd6c6d489ad13f53714d/46ca9dc978923c5e1247a9e9519240ba7ace413c/78d87b72cebe2a993fd5b017e9f14fb6278f2eae/ba6f0d1832eeb5eb3a6dc5cb30e0f720b3cb3536/79dd3f1d9dd310c2af89b09c71f34d93973b200f/5d5602236f5db19e8b337a2cd87a90ace5ea776d 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 (297461), EUVD (EUVD-2025-206593) and CERT Bund (WID-SEC-2026-0280). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

Open Source Linux Kernel

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: 5.0
VulDB Meta Temp Score: 4.9

VulDB Base Score: 4.6
VulDB Temp Score: 4.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔒

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: State issue
CWE: CWE-371
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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Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 297461
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-71182

Threat Intelligenceinfo

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

Countermeasuresinfo

Timelineinfo

01/31/2026 Advisory disclosed
01/31/2026 +0 days CVE reserved
01/31/2026 +0 days VulDB entry created
03/26/2026 +54 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2025-71182 (🔒)
GCVE (CVE): GCVE-0-2025-71182
GCVE (VulDB): GCVE-100-343600
EUVD: 🔒
CERT Bund: WID-SEC-2026-0280 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 01/31/2026 15:18
Updated: 03/26/2026 01:17
Changes: 01/31/2026 15:18 (58), 02/01/2026 03:33 (1), 02/01/2026 07:45 (2), 02/02/2026 16:07 (7), 03/26/2026 01:17 (12)
Complete: 🔍
Cache ID: 216::103

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