What is CVE-2026-46137?

CVE-2026-46137 is a Critical severity Linux kernel vulnerability with a CVSS score of 9.8 out of 10, classified as a Race Condition flaw (CWE-362), affecting Linux kernel versions from 5.10 onward and patched in 5.10.259, 5.15.210, 6.1.176 and others. CVE-2026-46137 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-46137?

CVE-2026-46137 has a CVSS score of 9.8 out of 10, rated Critical severity. The vector string is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2026-46137?

Yes, CVE-2026-46137 has been patched. Fixed versions include 5.10.259, 5.15.210, 6.1.176 and others. If you are running Linux kernel 5.10 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-46137 actively exploited?

CVE-2026-46137 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Race Condition (CWE-362)?

The product contains a code sequence that can run concurrently with other code, creating unexpected states. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/362.html

CVE-2026-46137

Critical

In the Linux kernel, the following vulnerability has been resolved: mptcp: pm: ADD_ADDR rtx: fix potential data-race This mptcp_pm_add_timer() helper is executed as a timer callback in softirq context. To avoid any data races, the socket lock needs to be held with bh_lock_sock(). If the socket is in use, retry again soon after, similar to what is done with the keepalive timer.

Package Linux Kernel

Published 2026-05-28

Last modified 2026-06-24

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

9.8

out of 10

Critical

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

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

Weakness type

CWE-362

CVE-2026-46137 is a Race Condition vulnerability

What is Race Condition?

The product contains a code sequence that can run concurrently with other code, creating unexpected states. Learn more on MITRE CWE

Affected versions

Linux kernel versions 5.10 and later are affected. Fixed in 5.10.259, 5.15.210, 6.1.176, 6.6.141, 6.12.91, 6.18.30, 7.0.7, 7.1 and their respective stable series.

Affected from

≥ 5.10

Fixed in

✓ 5.10.259 5.10.x ✓ 5.15.210 5.15.x ✓ 6.1.176 6.1.x ✓ 6.6.141 6.6.x ✓ 6.12.91 6.12.x ✓ 6.18.30 6.18.x ✓ 7.0.7 7.0.x ✓ 7.1

References

8 total

Kernel Git
https://git.kernel.org/stable/c/013dcdc1961543b9a3433466bc8c79a2f4ca75b5

Patch
Kernel Git
https://git.kernel.org/stable/c/23079e0b7742ec114d3507c3e3aad01b7b69e4af

Patch
Kernel Git
https://git.kernel.org/stable/c/2ad56e434199ca24a812bb353667aa1c3860f513

Patch
Kernel Git
https://git.kernel.org/stable/c/5cd6e0ad79d2615264f63929f8b457ad97ae550d

Patch
Kernel Git
https://git.kernel.org/stable/c/6e4710d7d8782cb61af29a7e7111ddfc38b9e1a3

Patch

Showing 5 of 8 references View all on NVD

Details

CVE ID CVE-2026-46137

Severity Critical

CVSS score 9.8 / 10

CVSS version 3.1

Published 2026-05-28

Modified 2026-06-24

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-46137?

CVE-2026-46137 is a Critical severity Linux kernel vulnerability with a CVSS score of 9.8 out of 10 , classified as a Race Condition flaw (CWE-362) . It affects Linux kernel versions from 5.10 onward and has been patched in 5.10.259, 5.15.210, 6.1.176 and others. CVE-2026-46137 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-46137?

CVE-2026-46137 has a CVSS score of 9.8 out of 10, rated Critical severity (CVSS 3.1). The vector string is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2026-46137?

Yes. CVE-2026-46137 has been patched. Fixed versions include 5.10.259, 5.15.210, 6.1.176 and others. If you are running Linux kernel 5.10 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-46137 actively exploited?

No. CVE-2026-46137 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.