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CVE-2026-22997
net: can: j1939: j1939_xtp_rx_rts_session_active(): deactivate session upon receiving the second rts
Description

In the Linux kernel, the following vulnerability has been resolved: net: can: j1939: j1939_xtp_rx_rts_session_active(): deactivate session upon receiving the second rts Since j1939_session_deactivate_activate_next() in j1939_tp_rxtimer() is called only when the timer is enabled, we need to call j1939_session_deactivate_activate_next() if we cancelled the timer. Otherwise, refcount for j1939_session leaks, which will later appear as | unregister_netdevice: waiting for vcan0 to become free. Usage count = 2. problem.

INFO

Published Date :

Jan. 25, 2026, 3:15 p.m.

Last Modified :

Feb. 6, 2026, 5:16 p.m.

Remotely Exploit :

No

Source :

416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products

The following products are affected by CVE-2026-22997 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel
: Total Affected Vendor : 1 | Products : 1
Solution
Fix memory leak by deactivating session when timer is cancelled.
  • Apply the kernel patch for the j1939 module.
  • Ensure session is deactivated when timer is cancelled.
  • Deactivate session upon receiving the second RTS.
  • Fix the session reference count leak.
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2026-22997.

URL Resource
https://git.kernel.org/stable/c/1809c82aa073a11b7d335ae932d81ce51a588a4a
https://git.kernel.org/stable/c/6121b7564c725b632ffe4764abe85aa239d37703
https://git.kernel.org/stable/c/809a437e27a3bf3c1c6c8c157773635552116f2b
https://git.kernel.org/stable/c/a73e7d7e346dae1c22dc3e95b02ca464b12daf2c
https://git.kernel.org/stable/c/adabf01c19561e42899da9de56a6a1da0e6b8a5b
https://git.kernel.org/stable/c/b1d67607e97d489c0cfbbf55f48a76b00710b0e4
https://git.kernel.org/stable/c/cb2a610867bc379988bae0bb4b8bbc59c0decf1a
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-22997 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-22997 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2026-22997 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2026-22997 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Feb. 06, 2026

    Action Type Old Value New Value
    Added Reference https://git.kernel.org/stable/c/a73e7d7e346dae1c22dc3e95b02ca464b12daf2c
    Added Reference https://git.kernel.org/stable/c/adabf01c19561e42899da9de56a6a1da0e6b8a5b
    Added Reference https://git.kernel.org/stable/c/b1d67607e97d489c0cfbbf55f48a76b00710b0e4
  • CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Jan. 30, 2026

    Action Type Old Value New Value
    Added Reference https://git.kernel.org/stable/c/809a437e27a3bf3c1c6c8c157773635552116f2b
  • New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Jan. 25, 2026

    Action Type Old Value New Value
    Added Description In the Linux kernel, the following vulnerability has been resolved: net: can: j1939: j1939_xtp_rx_rts_session_active(): deactivate session upon receiving the second rts Since j1939_session_deactivate_activate_next() in j1939_tp_rxtimer() is called only when the timer is enabled, we need to call j1939_session_deactivate_activate_next() if we cancelled the timer. Otherwise, refcount for j1939_session leaks, which will later appear as | unregister_netdevice: waiting for vcan0 to become free. Usage count = 2. problem.
    Added Reference https://git.kernel.org/stable/c/1809c82aa073a11b7d335ae932d81ce51a588a4a
    Added Reference https://git.kernel.org/stable/c/6121b7564c725b632ffe4764abe85aa239d37703
    Added Reference https://git.kernel.org/stable/c/cb2a610867bc379988bae0bb4b8bbc59c0decf1a
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
No CVSS metrics available for this vulnerability.