PT-2026-4659 · Linux+2 · Linux Kernel+2
Published
2026-01-01
·
Updated
2026-06-16
·
CVE-2026-22997
CVSS v3.1
7.5
High
| Vector | AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
A flaw exists in the Linux kernel related to CAN (Controller Area Network) functionality within the J1939 protocol. Specifically, the issue involves a reference count leak within the
j1939 session deactivate activate next() function when a timer is cancelled. This can lead to errors during network device unregistration, indicated by messages such as 'unregister netdevice: waiting for vcan0 to become free. Usage count = 2.' The problem occurs because j1939 session deactivate activate next() is not always called when the timer is disabled, resulting in a leaked reference count for J1939 sessions.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Found an issue in the description? Have something to add? Feel free to write us 👾
Weakness Enumeration
Related Identifiers
Affected Products
Linuxmint
Linux Kernel
Ubuntu