What is CVE-2026-22997?

CVE-2026-22997 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 5.4 onward and patched in 5.10.249, 5.15.199, 6.1.162 and others. CVE-2026-22997 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-22997?

CVE-2026-22997 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2026-22997?

Yes, CVE-2026-22997 has been patched. Fixed versions include 5.10.249, 5.15.199, 6.1.162 and others. If you are running Linux kernel 5.4 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-22997 actively exploited?

CVE-2026-22997 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-22997

Medium

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.

Package Linux Kernel

Published 2026-01-25

Last modified 2026-04-27

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected versions

Linux kernel versions 5.4 and later are affected. Fixed in 5.10.249, 5.15.199, 6.1.162, 6.6.122, 6.12.67, 6.18.7, 6.19 and their respective stable series.

Affected from

≥ 5.4

Fixed in

✓ 5.10.249 5.10.x ✓ 5.15.199 5.15.x ✓ 6.1.162 6.1.x ✓ 6.6.122 6.6.x ✓ 6.12.67 6.12.x ✓ 6.18.7 6.18.x ✓ 6.19

References

The following references provide additional information about CVE-2026-22997 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/1809c82aa073a11b7d335ae932d81ce51a588a4a
Patch
Kernel patch commit
https://git.kernel.org/stable/c/6121b7564c725b632ffe4764abe85aa239d37703
Patch
Kernel patch commit
https://git.kernel.org/stable/c/809a437e27a3bf3c1c6c8c157773635552116f2b
Patch

7 patch commits total View all on NVD

Details

CVE ID CVE-2026-22997

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2026-01-25

Modified 2026-04-27

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-22997?

CVE-2026-22997 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 5.4 onward and has been patched in 5.10.249, 5.15.199, 6.1.162 and others. CVE-2026-22997 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-22997?

CVE-2026-22997 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2026-22997?

Yes — CVE-2026-22997 has been patched. Fixed versions include 5.10.249, 5.15.199, 6.1.162 and others. If you are running Linux kernel 5.4 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-22997 actively exploited?

No — CVE-2026-22997 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.