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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2025-71182 Detail

Description

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.


Metrics

 
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CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/46ca9dc978923c5e1247a9e9519240ba7ace413c kernel.org
https://git.kernel.org/stable/c/5d5602236f5db19e8b337a2cd87a90ace5ea776d kernel.org
https://git.kernel.org/stable/c/78d87b72cebe2a993fd5b017e9f14fb6278f2eae kernel.org
https://git.kernel.org/stable/c/79dd3f1d9dd310c2af89b09c71f34d93973b200f kernel.org
https://git.kernel.org/stable/c/ba6f0d1832eeb5eb3a6dc5cb30e0f720b3cb3536 kernel.org
https://git.kernel.org/stable/c/c3a4316e3c746af415c0fd6c6d489ad13f53714d kernel.org
https://git.kernel.org/stable/c/ebb0dfd718dd31c8d3600612ca4b7207ec3d923a kernel.org

Weakness Enumeration

CWE-ID CWE Name Source

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2025-71182
NVD Published Date:
01/31/2026
NVD Last Modified:
01/31/2026
Source:
kernel.org